In the 2019 program do a File-Save AS and give it a easy name you can find or search for. And note where it saves it or select where to save it so you can find it again. The file will end in .tax2019. Then close the 2019 program. If you see your 2019 return in the 2019 program you have the .tax2019 file somewhere.
Are you on Windows 10? That can move files to different spots like to One Drive. Or to Drop Box. Could it be under a different user on your computer?
Can you see the file extensions in your Windows explorer or library? You might need to turn that on to show extensions so you can see the .tax2019 at the end.
