Form 5498 doesn't help you at all because it is just informational.
you have to enter all required data in the 1099-R interview.
Contact TurboTax support and have them walk you through the process and then you (and they) can figure out what is happening.
Note: a lot of people complain that the AMEND process doesn't work or if you try to CANCEL the amendment, TurboTax gets confused.
unfortunately your return was closer to correct before you started to amend.
If you can get back to that state, that would be a good time to contact Customer Support.
that means you cancel the AMEND and delete all 1099-Rs and try again.
Note: often deleting all 1099-Rs and reentering them solves a lot of problems.
