If you need to amend you have to amend using the same program that you filed the original return. You can not import or open a 2020 Turbo Tax file in the ProSeries 2020 program. You can only transfer from the PRIOR year. So a Turbo Tax .tax2020 file into 2021. Otherwise you will have to recreate the original 2020 return in ProSeries to amend it.
