What changed on the amended return if you entered the new info before amending? Have you filed the amended return? If you haven't mailed or efiled the amended 1040X then you need to undo it and then take out the new info and put your return back to the way it was originally filed. Then you can amend it property.
How to delete an Amended return in the Online version
How do I cancel or undo an amended return in TurboTax Online?
