Yes that should work. Or just copy the .tax2021 file from the flash drive to the computer hard drive. Or are you trying to transfer from a pdf file? You can't transfer from a flash drive.
Do you still have 2021 installed? Try opening 2021 program and see if you can get your 2021 return to show up in it. Go to FILE - OPEN. Then save it again with a name and place you can find. Go to File - Save As.
