We recently upgraded from v11 to v12.4 and are experiencing issues with the calculated lookup fields. When we import records in v11 only new items were added to the list. Now when we select import every record in the report is imported creating duplicates. We also receive an error message asking if we want to Replace list items with the duplicates, or Append all items. We need a third item to allow us to add Unique records. Does anyone have a fix for this?