TurboTax Downloaded version for MacOS - Not transferring prior year's data

Downloaded MacOS version of TurboTax 2021last week and downloaded updated version today (11/19/21 - 2021.r05.021) and started new return.  Program shows prior year tax file available for transfer, but when select it and request transfer of prior data, program reports that transfer was successful but no data is transferred - all blank.  This is the case whether attempting to use the prior year TurboTax file (format: XXXXX.tax2020) or trying to use the .pdf file created by TurboTax last year.

2020 version of TurboTax MacOS will open and transfer the 2019 tax data, but the 2020 version will not open the 2020 tax data file.  I am concerned that the 2021 version of TT MacOS corrupted the data in the prior year tax file.

Any similar experiences or suggestions?  Thanks very much.  (Do not want to manually enter all my data!)