Cannot believe how many so-called "Experts" are completely missing the point on this. The user wants to know if they can open any tax year file with a different year version of the software (open 2020 TT return file with TT 2018 software).
The short answer is No. You cannot. The TT developers haven't figured out how the simple feature of "backwards compatibility" works. You're just going to have to store the software and keys for every single effing version of TT you own. Sorry.
