As far as I can tell, that almost works. You have to put in fake contribution numbers, and then see if they are allowed. If you put in 0, and it says amount allowed 0, you don't know if that's because you put in 0, or if it's a real number.
Meanwhile, to get the AGI, I had to pay first, then go through the process.
[...and when I went back to where I was, it made me answer some of the same questions again, but didn't save my previous answers. But there's two other bugs that are keeping me from being able to e-file, until they update...]
