Using the CD/download TT2020 version, TT2020 attempts to transfer information from the 2019 return. I receive the page about the information that was transferred but nothing shows up in the "Detailed Tax Summary" page for 2019. This is not a show stopper but being able to compare this year's return with the 2019 return is a very useful feature to catch errors. Yes, I have tried several times to create a new return without success. I thought that all info was stored in the .tt19 file.
