Fix cache refresh handling for unsaved records

- Preserve NEW_RECORD entries during cache refresh
- Prevent accidental deletion of pending datastore changes
- Clean up only stale persisted records

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/datastores/DataStore.h

@@ -230,9 +230,17 @@ void DataStore::refreshCache(util::Map<std::string, TrackedRecord<TObject>>& cac
     for (int index = 0; index < oldCache.getSize(); ++index)
     {
         const std::string& id = oldCache.getKeyAt(index);
+        const TrackedRecord<TObject>& localTrackedRecord = oldCache.getValueAt(index);
         if (cache.find(id) == -1)
         {
-            delete oldCache.getValueAt(index).data;
+            if (localTrackedRecord.state == RecordState::NEW_RECORD)
+            {
+                cache.insert(id, localTrackedRecord);
+            }
+            else
+            {
+                delete localTrackedRecord.data;
+            }
         }
     }
 }