Filed with TT 2018 and realized other preparer for my 2017 taxes made a mistake for my work in PA while resident in NJ. Can I just amend my PA return for refund or all?

My tax preparer 2017 did not realize NJ/PA had reciprocation. To get  PA taxes refunded must I do all my fed NJ and PA taxes for 2017 again?

My 2017 return is not in TT but I have hard copy from other preparer. Can I use TT to fix this problem?