diff --git a/dev/Untitled.ipynb b/dev/Untitled.ipynb
index e5f1945f..f7d6ed46 100644
--- a/dev/Untitled.ipynb
+++ b/dev/Untitled.ipynb
@@ -4430,7 +4430,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.11.8"
+   "version": "3.10.13"
   }
  },
  "nbformat": 4,
diff --git a/dev/Untitled1.ipynb b/dev/Untitled1.ipynb
index 3b58837c..06fcf5c9 100644
--- a/dev/Untitled1.ipynb
+++ b/dev/Untitled1.ipynb
@@ -26,6 +26,24 @@
   {
    "cell_type": "code",
    "execution_count": 3,
+   "id": "776096ec-6e11-42ba-9604-4876ae234207",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Inventory cache cleared!\n"
+     ]
+    }
+   ],
+   "source": [
+    "clear_inventory_cache()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
    "id": "bee86950-ac96-49e0-8a9c-43920ae26096",
    "metadata": {},
    "outputs": [
@@ -33,7 +51,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "premise v.(2, 1, 1, 'dev0')\n",
+      "premise v.(2, 1, 1, 'dev2')\n",
       "+------------------------------------------------------------------+\n",
       "| Warning                                                          |\n",
       "+------------------------------------------------------------------+\n",
@@ -65,13 +83,568 @@
       "Keep uncertainty data?\n",
       "NewDatabase(..., keep_uncertainty_data=True)\n",
       "\n",
-      "Disable multiprocessing?\n",
-      "NewDatabase(..., use_multiprocessing=False)\n",
-      "\n",
       "Hide these messages?\n",
       "NewDatabase(..., quiet=True)\n",
       "- Extracting source database\n",
       "- Extracting inventories\n",
+      "Cannot find cached inventories. Will create them now for next time...\n",
+      "Importing default inventories...\n",
+      "\n",
+      "Extracted 1 worksheets in 0.10 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.02 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 7 worksheets in 0.03 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.02 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.02 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.03 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.02 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.03 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Could not find a biosphere flow for ('Iron, 72% in magnetite, 14% in crude ore', 'natural resource', 'in ground', 'kilogram') in lci-vanadium.xlsx. Exchange deleted.\n",
+      "Could not find a biosphere flow for ('TiO2, 54% in ilmenite, 18% in crude ore, in ground', 'natural resource', 'in ground', 'kilogram') in lci-vanadium.xlsx. Exchange deleted.\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.38 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "The following datasets to import already exist in the source database. They will not be imported\n",
+      "+--------------------------------+--------------------------------+----------+-------------+\n",
+      "|              Name              |       Reference product        | Location |     File    |\n",
+      "+--------------------------------+--------------------------------+----------+-------------+\n",
+      "| fluorspar production, 97% puri |     fluorspar, 97% purity      |   GLO    | lci-PV.xlsx |\n",
+      "| metallization paste production | metallization paste, back side |   RER    | lci-PV.xlsx |\n",
+      "| metallization paste production | metallization paste, back side |   RER    | lci-PV.xlsx |\n",
+      "| metallization paste production | metallization paste, front sid |   RER    | lci-PV.xlsx |\n",
+      "| photovoltaic module production | photovoltaic module, building- |   RER    | lci-PV.xlsx |\n",
+      "| photovoltaic module production | photovoltaic module, building- |   RER    | lci-PV.xlsx |\n",
+      "| photovoltaic mounting system p | photovoltaic mounting system,  |   RER    | lci-PV.xlsx |\n",
+      "| photovoltaic mounting system p | photovoltaic mounting system,  |   RER    | lci-PV.xlsx |\n",
+      "| photovoltaic mounting system p | photovoltaic mounting system,  |   RER    | lci-PV.xlsx |\n",
+      "| photovoltaic panel factory con |   photovoltaic panel factory   |   GLO    | lci-PV.xlsx |\n",
+      "|  polyvinylfluoride production  |       polyvinylfluoride        |    US    | lci-PV.xlsx |\n",
+      "| polyvinylfluoride production,  | polyvinylfluoride, dispersion  |    US    | lci-PV.xlsx |\n",
+      "| polyvinylfluoride, film produc |    polyvinylfluoride, film     |    US    | lci-PV.xlsx |\n",
+      "| silicon production, metallurgi |  silicon, metallurgical grade  |    NO    | lci-PV.xlsx |\n",
+      "|   vinyl fluoride production    |         vinyl fluoride         |    US    | lci-PV.xlsx |\n",
+      "|   wafer factory construction   |         wafer factory          |    DE    | lci-PV.xlsx |\n",
+      "+--------------------------------+--------------------------------+----------+-------------+\n",
+      "Extracted 1 worksheets in 0.05 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.02 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.02 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "The following datasets to import already exist in the source database. They will not be imported\n",
+      "+--------------------------------+--------------------------------+----------+--------------------------------+\n",
+      "|              Name              |       Reference product        | Location |              File              |\n",
+      "+--------------------------------+--------------------------------+----------+--------------------------------+\n",
+      "| carbon dioxide, captured at ce | carbon dioxide, captured and r |   RER    | lci-synfuels-from-methanol-fro |\n",
+      "+--------------------------------+--------------------------------+----------+--------------------------------+\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "The following datasets to import already exist in the source database. They will not be imported\n",
+      "+--------------------------------+--------------------------------+----------+--------------------------------+\n",
+      "|              Name              |       Reference product        | Location |              File              |\n",
+      "+--------------------------------+--------------------------------+----------+--------------------------------+\n",
+      "| hydrogen production, coal gasi | hydrogen, gaseous, low pressur |   RoW    | lci-hydrogen-coal-gasification |\n",
+      "| methanol production, coal gasi |            methanol            |   RoW    | lci-hydrogen-coal-gasification |\n",
+      "+--------------------------------+--------------------------------+----------+--------------------------------+\n",
+      "Extracted 1 worksheets in 0.00 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.02 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "The following datasets to import already exist in the source database. They will not be imported\n",
+      "+--------------------------------+--------------------------------+----------+--------------------------------+\n",
+      "|              Name              |       Reference product        | Location |              File              |\n",
+      "+--------------------------------+--------------------------------+----------+--------------------------------+\n",
+      "| hydrogen production, steam met | hydrogen, gaseous, low pressur |   RER    | lci-hydrogen-smr-atr-natgas.xl |\n",
+      "+--------------------------------+--------------------------------+----------+--------------------------------+\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.00 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.02 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "The following datasets to import already exist in the source database. They will not be imported\n",
+      "+--------------------------------+--------------------------------+----------+--------------------------------+\n",
+      "|              Name              |       Reference product        | Location |              File              |\n",
+      "+--------------------------------+--------------------------------+----------+--------------------------------+\n",
+      "| methanol production facility,  | methanol production facility,  |   RER    | lci-synfuels-from-methanol-fro |\n",
+      "+--------------------------------+--------------------------------+----------+--------------------------------+\n",
+      "Extracted 1 worksheets in 0.02 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 5 worksheets in 0.54 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.02 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.03 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.00 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.07 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.02 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.02 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.04 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.01 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 39 worksheets in 0.36 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.21 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 0.17 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Extracted 1 worksheets in 1.23 seconds\n",
+      "Migrating to 3.8 first\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Applying strategy: migrate_datasets\n",
+      "Applying strategy: migrate_exchanges\n",
+      "Remove uncertainty data.\n",
+      "Data cached. It is advised to restart your workflow at this point.\n",
+      "This allows premise to use the cached data instead, which results in\n",
+      "a faster workflow.\n",
       "- Fetching IAM data\n",
       "Done!\n"
      ]
@@ -97,7 +670,15 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": null,
+   "id": "0f71d709-497d-4454-9545-aafd07387bdf",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 5,
    "id": "0c80994c-cbac-4143-81ee-1de1531a6f95",
    "metadata": {},
    "outputs": [
@@ -105,7 +686,7 @@
      "name": "stderr",
      "output_type": "stream",
      "text": [
-      "Processing scenarios: 100%|█████████████| 1/1 [01:18<00:00, 78.86s/it]"
+      "Processing scenarios: 100%|█████████████| 1/1 [01:06<00:00, 66.21s/it]"
      ]
     },
     {
@@ -125,14 +706,12 @@
     }
    ],
    "source": [
-    "#ndb.update_electricity()\n",
-    "#ndb.update_all()\n",
     "ndb.update()"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": null,
    "id": "dff4efb1-69ab-4bd5-8d52-4038df180a85",
    "metadata": {},
    "outputs": [
@@ -140,29 +719,35 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "Write Simapro import file(s).\n",
+      "Write new database(s) to Brightway.\n",
       "Running all checks...\n",
-      "Minor anomalies found: check the change report.\n",
-      "The following exchanges have not been used in the Simapro export:\n",
-      "+---------------------------------------+---------+----------------------------------+----------+\n",
-      "|                  Name                 | Product |            Categories            | Location |\n",
-      "+---------------------------------------+---------+----------------------------------+----------+\n",
-      "|        Hazardous waste disposed       |         | ('inventory indicator', 'waste') |   None   |\n",
-      "|   Organic carbon, placed in landfill  |         | ('inventory indicator', 'waste') |   None   |\n",
-      "| Waste mass, total, placed in landfill |         | ('inventory indicator', 'waste') |   None   |\n",
-      "|      Non-hazardous waste disposed     |         | ('inventory indicator', 'waste') |   None   |\n",
-      "+---------------------------------------+---------+----------------------------------+----------+\n",
-      "177 unmatched flow categories.\n",
-      "Simapro CSV file saved in /Users/romain/GitHub/premise/dev/export/simapro.\n",
-      "Generate scenario report.\n",
-      "Report saved under /Users/romain/GitHub/premise/dev/export/scenario_report.\n",
-      "Generate change report.\n",
-      "Report saved under /Users/romain/GitHub/premise/dev.\n"
+      "Minor anomalies found: check the change report.\n"
+     ]
+    },
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "Writing activities to SQLite3 database:\n",
+      "0% [##############################] 100% | ETA: 00:00:00\n",
+      "Total time elapsed: 00:00:32\n"
+     ]
+    },
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Title: Writing activities to SQLite3 database:\n",
+      "  Started: 07/01/2024 17:19:47\n",
+      "  Finished: 07/01/2024 17:20:20\n",
+      "  Total time elapsed: 00:00:32\n",
+      "  CPU %: 94.20\n",
+      "  Memory %: 15.94\n"
      ]
     }
    ],
    "source": [
-    "ndb.write_db_to_simapro()"
+    "ndb.write_db_to_brightway()"
    ]
   },
   {
@@ -11002,7 +11587,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.11.8"
+   "version": "3.10.13"
   }
  },
  "nbformat": 4,
diff --git a/dev/test_custom_scenarios.ipynb b/dev/test_custom_scenarios.ipynb
index eaddc37a..3a85f893 100644
--- a/dev/test_custom_scenarios.ipynb
+++ b/dev/test_custom_scenarios.ipynb
@@ -19,7 +19,7 @@
    "outputs": [],
    "source": [
     "import bw2io, bw2data, bw2calc\n",
-    "bw2data.projects.set_current(\"ei39\")"
+    "bw2data.projects.set_current(\"ei310\")"
    ]
   },
   {
@@ -32,7 +32,7 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "premise v.(2, 0, 0, 'dev3')\n",
+      "premise v.(2, 1, 1, 'dev1')\n",
       "+------------------------------------------------------------------+\n",
       "| Warning                                                          |\n",
       "+------------------------------------------------------------------+\n",
@@ -64,8 +64,6 @@
       "Keep uncertainty data?\n",
       "NewDatabase(..., keep_uncertainty_data=True)\n",
       "\n",
-      "Disable multiprocessing?\n",
-      "NewDatabase(..., use_multiprocessing=False)\n",
       "\n",
       "Hide these messages?\n",
       "NewDatabase(..., quiet=True)\n",
@@ -79,21 +77,21 @@
      "name": "stderr",
      "output_type": "stream",
      "text": [
-      "Updating: external:  50%|███████▌       | 1/2 [00:32<00:32, 32.91s/it]"
+      "Processing scenarios:   0%|                     | 0/1 [00:00<?, ?it/s]"
      ]
     },
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "No efficiency factor provided for dataset aluminium production, primary, liquid, prebake in RoW\n"
+      "Extracted 1 worksheets in 0.20 seconds\n"
      ]
     },
     {
      "name": "stderr",
      "output_type": "stream",
      "text": [
-      "Updating: external: 100%|███████████████| 2/2 [00:42<00:00, 21.30s/it]"
+      "Processing scenarios: 100%|█████████████| 1/1 [00:51<00:00, 51.35s/it]"
      ]
     },
     {
@@ -113,52 +111,35 @@
     }
    ],
    "source": [
-    "#for url in urls:\n",
-    "scenarios = [\n",
-    "    #{\"model\": \"image\", \"pathway\":\"SSP2-Base\", \"year\": 2020},\n",
-    "    #{\"model\": \"image\", \"pathway\":\"SSP2-Base\", \"year\": 2025},\n",
-    "    #{\"model\": \"image\", \"pathway\":\"SSP2-Base\", \"year\": 2030},\n",
-    "    #{\"model\": \"image\", \"pathway\":\"SSP2-Base\", \"year\": 2035},\n",
-    "    #{\"model\": \"image\", \"pathway\":\"SSP2-Base\", \"year\": 2040},\n",
-    "    #{\"model\": \"image\", \"pathway\":\"SSP2-Base\", \"year\": 2045},\n",
-    "    #{\"model\": \"image\", \"pathway\":\"SSP2-Base\", \"year\": 2050},\n",
-    "    #{\"model\": \"image\", \"pathway\":\"SSP2-RCP26\", \"year\": 2020},\n",
-    "    ##{\"model\": \"image\", \"pathway\":\"SSP2-RCP26\", \"year\": 2025},\n",
-    "    #{\"model\": \"remind\", \"pathway\":\"SSP2-Base\", \"year\": 2020},\n",
-    "    #{\"model\": \"remind\", \"pathway\":\"SSP2-Base\", \"year\": 2030},\n",
-    "    #{\"model\": \"remind\", \"pathway\":\"SSP2-Base\", \"year\": 2050},\n",
-    "    #{\"model\": \"remind\", \"pathway\":\"SSP2-PkBudg500\", \"year\": 2030},\n",
-    "    {\"model\": \"remind\", \"pathway\":\"SSP2-PkBudg500\", \"year\": 2050},\n",
-    "    #{\"model\": \"image\", \"pathway\":\"SSP2-RCP26\", \"year\": 2035},\n",
-    "    #{\"model\": \"image\", \"pathway\":\"SSP2-RCP26\", \"year\": 2040},\n",
-    "    #{\"model\": \"image\", \"pathway\":\"SSP2-RCP26\", \"year\": 2045},\n",
-    "    \n",
+    "external_scenarios = [\n",
+    "    #{\"scenario\": \"SPS\", \"data\": Package(\"/Users/romain/Github/metal-prospective-scenarios/datapackage.json\")},\n",
+    "    #{\"scenario\": \"Business As Usual\", \"data\": Package(\"/Users/romain/Github/energy-perspective-2050-switzerland/datapackage.json\")},\n",
+    "    #{\"scenario\": \"Business As Usual - remind\", \"data\": Package(\"/Users/romain/Github/ammonia-prospective-scenarios/datapackage.json\")},\n",
+    "    {\"scenario\": \"Ambitious\", \"data\": Package(\"/Users/romain/Github/hydrogen-prospective-scenarios/datapackage.json\")},\n",
+    "    #{\"scenario\": \"\", \"data\": Package(\"/Users/romain/Documents/marguerite/datapackage.json\")},\n",
     "]\n",
     "\n",
-    "marguerite = Package(\"/Users/romain/Documents/marguerite/datapackage.json\")\n",
-    "\n",
-    "ndb = NewDatabase(\n",
-    "        scenarios = scenarios,        \n",
-    "        source_db=\"ecoinvent 3.9.1 cutoff\",\n",
-    "        source_version=\"3.9\",\n",
-    "        key='tUePmX_S5B8ieZkkM7WUU2CnO8SmShwmAeWK9x2rTFo=',\n",
-    "        use_multiprocessing=False,\n",
-    "        external_scenarios=[marguerite]\n",
-    ")\n",
-    "ndb.update([\n",
-    "    \"electricity\",\n",
-    "    \"external\"\n",
-    "])\n",
-    "#ndb.write_db_to_brightway([\"test5\", \"test6\"])\n",
-    "#ndb.update_external_scenario()\n",
-    "#ndb.write_datapackage(name=\"test13\")\n",
-    "#ndb.write_superstructure_db_to_brightway(\"test9\")\n",
-    "#ndb.write_db_to_simapro(\"test_olca\")\n"
+    "for external in external_scenarios:\n",
+    "    \n",
+    "    scenarios = [\n",
+    "        {\"model\": \"remind\", \"pathway\":\"SSP2-PkBudg500\", \"year\": 2050, \"external scenarios\": [external]},\n",
+    "        #{\"model\": \"image\", \"pathway\":\"SSP2-RCP26\", \"year\": 2035, \"external scenarios\": external_scenarios},\n",
+    "    ]\n",
+    "    \n",
+    "    \n",
+    "    ndb = NewDatabase(\n",
+    "            scenarios = scenarios,        \n",
+    "            source_db=\"ecoinvent-3.10-cutoff\",\n",
+    "            source_version=\"3.10\",\n",
+    "            key='tUePmX_S5B8ieZkkM7WUU2CnO8SmShwmAeWK9x2rTFo=',\n",
+    "            biosphere_name=\"ecoinvent-3.10-biosphere\",\n",
+    "    )\n",
+    "    ndb.update(\"external\")\n"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 7,
    "id": "799788bc-d53e-4cef-bdda-ded8d40cdb03",
    "metadata": {
     "tags": []
@@ -169,7 +150,8 @@
      "output_type": "stream",
      "text": [
       "Write new database(s) to Brightway.\n",
-      "Running all checks...\n"
+      "Running all checks...\n",
+      "Minor anomalies found: check the change report.\n"
      ]
     },
     {
@@ -178,7 +160,7 @@
      "text": [
       "Writing activities to SQLite3 database:\n",
       "0% [##############################] 100% | ETA: 00:00:00\n",
-      "Total time elapsed: 00:00:23\n"
+      "Total time elapsed: 00:00:21\n"
      ]
     },
     {
@@ -186,21 +168,104 @@
      "output_type": "stream",
      "text": [
       "Title: Writing activities to SQLite3 database:\n",
-      "  Started: 02/15/2024 10:08:54\n",
-      "  Finished: 02/15/2024 10:09:18\n",
-      "  Total time elapsed: 00:00:23\n",
-      "  CPU %: 94.70\n",
-      "  Memory %: 8.80\n",
-      "Created database: test marguerite 2\n",
+      "  Started: 06/20/2024 16:31:51\n",
+      "  Finished: 06/20/2024 16:32:12\n",
+      "  Total time elapsed: 00:00:21\n",
+      "  CPU %: 99.90\n",
+      "  Memory %: 11.64\n",
+      "Created database: test marguerite 5\n",
       "Generate scenario report.\n",
-      "Report saved under /Users/romain/GitHub/premise/dev/export/scenario_report.\n",
+      "Report saved under /Users/romain/Github/premise/dev/export/scenario_report.\n",
       "Generate change report.\n",
-      "Report saved under /Users/romain/GitHub/premise/dev.\n"
+      "Report saved under /Users/romain/Github/premise/dev.\n"
      ]
     }
    ],
    "source": [
-    "ndb.write_db_to_brightway(\"test marguerite 2\")"
+    "ndb.write_db_to_brightway(\"test marguerite 5\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "id": "91d9b891-1438-42ef-848a-440f97aff150",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from premise.utils import load_database\n",
+    "ndb.scenarios[0] = load_database(ndb.scenarios[0])"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "5779b911-0ff9-4e3b-940f-d7d1baeec710",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "id": "8dc932d9-e5f5-48b1-b900-ee38557c3049",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['comment', 'filename', 'location', 'production amount', 'reference product', 'source', 'type', 'unit', 'worksheet name', 'name', 'exchanges', 'database', 'code', 'regions', 'region mapping', 'production volume variable', 'production volume']\n",
+      "{'LAM': 'CL'}\n",
+      "Energy, solar, converted 3.8503 None\n",
+      "Heat, waste 0.25027 None\n",
+      "electricity production, photovoltaic, commercial 1 LAM\n",
+      "photovoltaic flat-roof installation, 156 kWp, multi-Si, on roof 2.433772229872875e-10 CH\n",
+      "photovoltaic flat-roof installation, 156 kWp, single-Si, on roof 1.2890969393392591e-10 CH\n",
+      "photovoltaic open ground installation, 570 kWp, CIS, on open ground 6.664318406721691e-10 RER\n",
+      "photovoltaic open ground installation, 570 kWp, CdTe, on open ground 8.080054441310238e-10 RER\n",
+      "photovoltaic open ground installation, 570 kWp, micro-Si, on open ground 1.0531694891451379e-10 RER\n",
+      "photovoltaic open ground installation, 570 kWp, multi-Si, on open ground 2.1339630960383448e-08 RER\n",
+      "photovoltaic open ground installation, 570 kWp, single-Si, on open ground 1.129135812952328e-08 RER\n",
+      "photovoltaic slanted-roof installation, 93 kWp, multi-Si, laminated, integrated, on roof 3.877718056324967e-11 CH\n",
+      "photovoltaic slanted-roof installation, 93 kWp, multi-Si, panel, mounted, on roof 4.531078252850883e-10 CH\n",
+      "photovoltaic slanted-roof installation, 93 kWp, single-Si, laminated, integrated, on roof 1.4423184735559989e-11 CH\n",
+      "photovoltaic slanted-roof installation, 93 kWp, single-Si, panel, mounted, on roof 2.400125609183388e-10 CH\n",
+      "tap water, water balance according to MoeK 2013, at user 0.00092565 BR\n",
+      "tap water, water balance according to MoeK 2013, at user 0.00092565 CL\n",
+      "tap water, water balance according to MoeK 2013, at user 0.00092565 CO\n",
+      "tap water, water balance according to MoeK 2013, at user 0.00092565 MX\n",
+      "treatment of wastewater, average, wastewater treatment -3.3323e-06 RoW\n"
+     ]
+    }
+   ],
+   "source": [
+    "for ds in ndb.scenarios[0][\"database\"]:\n",
+    "    if ds[\"name\"] == \"electricity production, photovoltaic, commercial\" and ds[\"location\"] == \"LAM\":\n",
+    "        print(list(ds.keys()))\n",
+    "        print(ds['region mapping'])\n",
+    "        for e in ds[\"exchanges\"]:\n",
+    "            print(e[\"name\"], e[\"amount\"], e.get(\"location\"))"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "id": "b561179c-bccd-472a-8750-b9c615be22b8",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "'LAM'"
+      ]
+     },
+     "execution_count": 6,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "geo.ecoinvent_to_iam_location(\"IAI Area, South America\")"
    ]
   },
   {
@@ -1622,7 +1687,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.11.8"
+   "version": "3.10.13"
   }
  },
  "nbformat": 4,
diff --git a/premise/data/additional_inventories/lci-fuel_cell.xlsx b/premise/data/additional_inventories/lci-fuel_cell.xlsx
index cc640e4e..571cbbbb 100644
Binary files a/premise/data/additional_inventories/lci-fuel_cell.xlsx and b/premise/data/additional_inventories/lci-fuel_cell.xlsx differ
diff --git a/premise/data/additional_inventories/lci-hydrogen-electrolysis.xlsx b/premise/data/additional_inventories/lci-hydrogen-electrolysis.xlsx
index e111818b..7dc0c5d4 100644
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