I made one change on the section for calculating underpayment that asked if my income was from fishing. I had said no, and it said no underpayment, so I said yes, and it said no underpayment penalty in both cases. Now I can't go back and get to that question. Forms 502UP (and 502S?) are now being generated for filing and I get error messages that the forms are incomplete so can't efile. I can't find where to delete within the forms so they aren't generated. I do not meet the requirements for underpayment. If I had never toggled that question, I wouldn't even have this problem, now there is no way to go back and undo it?