Sorry to hear about your troubles @epcot . As I wrote above, I'm trying the approach of "file the amendment as if I'd received the 1099-R I wish I had." Unfortunately I don't have a conclusion to this yet.
It turned out that I did have to paper file after all, as TurboTax feigns being able to e-file 2019 amendments, but when you go to actually push the button, claims "The IRS and state agencies are not currently accepting amended tax returns via e-file." This isn't true; the IRS
does accept e-filed amended returns, including for 2019. If you dig, TurboTax
admits in a help article that they are the ones limiting transmission. (This actually turned out to have a silver lining though, as after printing both my state and federal returns, I noticed TurboTax had a calculation bug on my state amendment. That turned into a separate effort to get resolved.)
The paper copies have been in the queue at the IRS for a few months now, but they have posted they are having delays processing them (their estimate is simply "more than 20 weeks"). It'll probably be a while before I can say if my approach went over with them.
