That is very bizarre. I read your reply and immediately went back to my files and every copy that I have of my TT collection is still in my documents file - PDF, saved file, backup or marker file with the cedilla type squiggle in front of it. Hopeful suggestion: if you did your 2023 Turbo Tax and transferred your information from the 2022 taxes, then the 2022 file is still on the computer someplace. It might be that the others are there as well. Start up 2023 with a new tax form and have it transfer 2022 info. Have it try to search for it if it has trouble. Try your browser searches.
TT creators are certainly aware of your need to save taxes for five years. They would never program a clean up feature affecting your personal copies of past TT taxes. Something else happened. First, think of where you remember storing the PDF (desktop, documents, thumb drive, cloud backup). Then think of how those files or folders might have been moved or changed or, as you say, erased. What did you or anyone else do that might have made them vanish? Has anything else vanished?
Last option would be to call Intuit to have them check with a software specialist to see if there is any possibility it could happen. To my mind, that would take very specific programming to identify and erase a set of files. Hopefully, this helps. It is all I have to offer.
