Same just happened to me. Was at the end of the return. Turbo Tax did an update (3/27/20) and now it looks like I just installed the program for the first time.
Did not export a .pdf, this is the .TAX file I am looking for - it is nowhere on the PC.
A search finds my 2017 and 2018 .TAX files, but no 2019 .TAX file exists - it is as if it overwrote the whole 2019 directory.
Have to start over from the beginning. This should not happen Intuit. Please fix.
Others - it is a good idea before you do any updates to make a copy of the 2019 .TAX file to a second directory just in case before doing any more updates.
