I have the same problem. I finished and efiled my fed and state 2023 taxes from the TT desktop version on 3/16/2024. I checked today 4/15 for the tax and pdf copy files and all are gone from my PC. All gone. I need to amend my returns and will have to somehow recreate them. I will likely have to get transcripts from the IRS and my state. This is not acceptable. Judging by the large number of complaints on this subject, it appears that Turbotax has a major problem. And there is no way that Turbotax can repair the damage done.
