Duplicate a return in the software

I'm running the desktop Deluxe version.  My 2021 situation will be significantly different than 2020.  I'd like to do a trial return with my best guesses of the changes; but more than half of the return will be the same.  Is there an easy way to copy the completed, but not yet filed 2020 return with a different ID and work on that.  I can achieve the same thing with a bunch of data entry; but I'm lazy