Answered by Shaykh Faraz Rabbani
Suppose a brother was not a hanafi (i.e. did not follow one madhab or followed another madhab) and did not pray his witr prayers regularly (because he did not consider them waajib). later, the brother started following hanafi fiqh in his ibadaat. does he have to make up the missed witr prayers from before he was a hanafi?
Answer:
Walaikum assalam,
He would not have to make those prayers up, though, of course, it is religiously superior to do so.
Wassalam,
Faraz Rabbani.