Most of a muni bond mutual fund was not tax exempt in my state (I moved so this was a part year state calculation). Despite entering the mix, the correct number did not find its way to the right NC form. TT help suggested a "fake" of this (via an expense adjustment) but that ended up with a double entry on one of the forms. I ended up overriding the program on the form where the number was needed, and as far as I can tell the return now looks correct. But the software should be corrected to handle this.
In my case, the amount need to get to NC D400 schedule PN and NCDOR Schedule S and finally to NC DOR D400.