Before you start the amendment process you MUST have the return set as it was when you originally filed. If you made any changes to the tax file prior to starting the amendment process then you must fix them first ... https://ttlc.intuit.com/community/amending/help/how-do-i-cancel-or-undo-an-amended-return-in-the-turbotax-cd-download-software/01/26316#M55