diff --git a/koku/subs/subs_data_messenger.py b/koku/subs/subs_data_messenger.py
index 511eb1b88b..e1b61ce1d7 100644
--- a/koku/subs/subs_data_messenger.py
+++ b/koku/subs/subs_data_messenger.py
@@ -57,7 +57,7 @@ def __init__(self, context, schema_name, tracing_id):
         self.org_id = subs_cust.org_id
         self.download_path = mkdtemp(prefix="subs")
         self.instance_map = {}
-        self.date_map = defaultdict(list)
+        self.date_map = defaultdict(dict)
 
     def determine_azure_instance_and_tenant_id(self, row):
         """For Azure we have to query the instance id if its not provided by a tag and the tenant_id."""
@@ -222,18 +222,23 @@ def process_azure_row(self, row):
         """Process an Azure row into subs kafka messages."""
         msg_count = 0
         # Azure can unexplicably generate strange records with a second entry per day
-        # so we track the resource ids we've seen for a specific day so we don't send a record twice
-        if self.date_map.get(row["subs_start_time"]) and row["subs_resource_id"] in self.date_map.get(
-            row["subs_start_time"]
-        ):
-            return msg_count
-        self.date_map[row["subs_start_time"]].append(row["subs_resource_id"])
+        # these two values should sum to the total usage so we need to track what was already
+        # sent for a specific instance so we get the full usage amount
+        range_start = 0
+        resource_id = row["subs_resource_id"]
+        start_time = row["subs_start_time"]
+        usage = int(row["subs_usage_quantity"])
+        if self.date_map.get(start_time) and resource_id in self.date_map.get(start_time):
+            range_start = self.date_map.get(start_time).get(resource_id)
+        self.date_map[start_time] = {resource_id: usage + range_start}
         instance_id, tenant_id = self.determine_azure_instance_and_tenant_id(row)
         if not instance_id:
             return msg_count
         # Azure is daily records but subs need hourly records
-        start = parser.parse(row["subs_start_time"])
-        for i in range(int(row["subs_usage_quantity"])):
+        start = parser.parse(start_time)
+        # if data for the day was previously sent, start at hour following previous events
+        start = start + timedelta(hours=range_start)
+        for i in range(range_start, range_start + usage):
             end = start + timedelta(hours=1)
             subs_dict = self.build_azure_subs_dict(
                 instance_id,
diff --git a/koku/subs/test/test_subs_data_messenger.py b/koku/subs/test/test_subs_data_messenger.py
index 12bfa7eaba..daae1b1875 100644
--- a/koku/subs/test/test_subs_data_messenger.py
+++ b/koku/subs/test/test_subs_data_messenger.py
@@ -536,25 +536,41 @@ def test_process_and_send_subs_message_azure_with_id(self, mock_reader, mock_pro
     def test_process_and_send_subs_message_azure_time_already_processed(
         self, mock_msg_builder, mock_reader, mock_producer, mock_remove, mock_azure_id
     ):
-        """Tests that the functions are not called for a provider that has already processed."""
+        """Tests that the start for the range is updated."""
+        mock_azure_id.return_value = ("expected", "expected")
+        mock_msg_builder.return_value = {"fake": "msg"}
         upload_keys = ["fake_key"]
-        self.azure_messenger.date_map["2023-07-01T01:00:00Z"] = "i-55555556"
+        self.azure_messenger.date_map = {"2024-07-01T00:00:00Z": {"i-55555556": 12}}
+        instance = "expected"
+        account = "9999999999999"
+        vcpu = "2"
+        rhel_version = "7"
+        sla = "Premium"
+        usage = "Production"
+        role = "Red Hat Enterprise Linux Server"
+        conversion = "true"
+        addon_id = "ELS"
+        tenant_id = "expected"
+        expected_start = "2024-07-01T12:00:00+00:00"
+        expected_end = "2024-07-01T13:00:00+00:00"
         mock_reader.return_value = [
             {
                 "resourceid": "i-55555556",
-                "subs_start_time": "2023-07-01T01:00:00Z",
-                "subs_end_time": "2023-07-01T02:00:00Z",
+                "subs_start_time": "2024-07-01T00:00:00Z",
+                "subs_end_time": "2024-07-02T00:00:00Z",
                 "subs_resource_id": "i-55555556",
-                "subs_account": "9999999999999",
+                "subs_account": account,
                 "physical_cores": "1",
                 "subs_vcpu": "2",
                 "variant": "Server",
-                "subs_usage": "Production",
-                "subs_sla": "Premium",
-                "subs_role": "Red Hat Enterprise Linux Server",
-                "subs_product_ids": "479-70",
-                "subs_addon": "false",
-                "subs_instance": "",
+                "subs_usage": usage,
+                "subs_usage_quantity": "1",
+                "subs_sla": sla,
+                "subs_role": role,
+                "subs_rhel_version": rhel_version,
+                "subs_addon_id": addon_id,
+                "subs_instance": instance,
+                "subs_conversion": conversion,
                 "source": self.azure_provider.uuid,
                 "resourcegroup": "my-fake-rg",
             }
@@ -562,9 +578,22 @@ def test_process_and_send_subs_message_azure_time_already_processed(
         mock_op = mock_open(read_data="x,y,z")
         with patch("builtins.open", mock_op):
             self.azure_messenger.process_and_send_subs_message(upload_keys)
-        mock_azure_id.assert_not_called()
-        mock_msg_builder.assert_not_called()
-        mock_producer.assert_not_called()
+        mock_azure_id.assert_called_once()
+        mock_msg_builder.assert_called_with(
+            instance,
+            account,
+            expected_start,
+            expected_end,
+            vcpu,
+            rhel_version,
+            sla,
+            usage,
+            role,
+            conversion,
+            addon_id,
+            tenant_id,
+        )
+        mock_producer.assert_called_once()
 
     def test_determine_product_ids(self):
         """Test that different combinations of inputs result in expected product IDs"""