ejdtaxman
Level 4
This widget could not be displayed.

I called support and was told I have to open each file and save individually in 2019 before transferring to 2020. No explanation as to why aside from something vague like "must be something to do with your network" or some such garbage. 

it was incredibly cumbersome and took me about 3 hours over 2 days but I was able to complete it. 

Use this solution if you encounter a similar problem.  

0 Cheers