diff --git a/ui/src/features/configure/block/Utils/editVnets.jsx b/ui/src/features/configure/block/Utils/editVnets.jsx
index f4b41c2..2b12cb0 100644
--- a/ui/src/features/configure/block/Utils/editVnets.jsx
+++ b/ui/src/features/configure/block/Utils/editVnets.jsx
@@ -586,6 +586,11 @@ export default function EditVnets(props) {
         refreshData();
       }
     }
+
+    if(!block) {
+      setVNets(null);
+      setSelectionModel(null);
+    }
   }, [block, subscriptions, prevBlock, refreshData]);
 
   return (