TurboTax has been tracking my Roth contributions on my Mac for many years. I've been forced to migrate to a PC because Intuit has abandoned users of older Macs. I was unable to import my Mac/2019 return into PC/2020, so I have to enter data by hand. How do I convince TT 2019 on my Mac to tell me the value of my past Roth contribution basis, so I can manually enter the value information my PC/2020 return?