Can't transfer 2021 TT PDF into 2022 TT Mac desktop

Used 2021 TT desktop for Mac and just purchased 2021 TT desktop for Mac. Trying to transfer 2021 tax returns saved on my Mac as PDF and the program says that the file is too large.  Didn't realize I needed to save last years return in two formats.  Am I screwed or is there anything I can do to fix this. Seems odd that TT will allow you transfer prior year PDF returns for other software but not their own.  Thanks