I have the same issue. I just opened TT to look at some info from 2018 return. It asked to update, and when I went to open my TT file it was gone! My two kids files were there but mine were missing. I checked the folder and 2018, 2017, 2016 were gone. Only mine. The kids were all there and mine from 2013-2015 were there. And not in the recycle bin either.
