Why is TurboTax 2020 not able to access data from 2019 return
Because whatever file you were provided by your CPA was not done with TurboTax 2019. Your CPA used a professional program, such as Lacerte' or ProSeries. Neither can be imported by TurboTax.
Lacerte' and ProSeries are professional tax preparation programs used by licensed tax professionals.
TuboTax is a personal program used by tax filers who want to self-prepare and self-file their own tax returns. The personal use program can not, does not, and will not import from or export to the professional programs.
Additionally, TurboTax will only import *extremely* limited data (basically, only the information under the Personal Information tab) from a PDF file, and only if that PDF file was saved from the TurboTax program.
