This also happened to me. I hit the Amend button, suddenly a 1040X is created showing the Net change column with a + $100,000. Funny thing is that the A column and B column added together in column C matches up with the original filed return data !
We will work on getting the return back to the original data before any corrections.
It looks like the tax due section on the 1040X also needs some work; eventually I got the the amount due windows back to zero, to what they were on filing.
