I see this problem whether I import my 1098 from my bank or type it myself. In both cases, the deduction applies at first, but AFTER I enter the 1098, it takes me to that extra flow with the heading "Tell us a little more about your loan with..." When it asks for the date that we originally bought the property (before 2017 for me), that's when TT seems to "revert" my deduction, as if the pre-2017 date was disqualifying. I do see a deduction in the tallies before that point.
