Incidentally, my first attempt to work around this by changing the box 1 amount failed. I changed one "duplicate" 1099-R by 1 cent and resubmitted. It was rejected again, however when I examined the file, I found that I somehow resubmitted the original untweaked amounts. I'm not really sure how that happened, but I suspect that it was because I made the change in forms view, and I only changed box 1. I did that because the step-by-step method forces me to reenter answers to questions that it doesn't save (probably because these are inherited IRAs). So, for my second attempt, I used the wizard to tediously reenter all of the answers, and I also updated both box 1 and box 2a (gross distribution and taxable amount). I have higher hopes for this attempt...
