The one thing Newman was crystal clear about was that development of doctrine did ‘not’ mean its abrogation. Advocates of doctrinal development on this site are almost to a man in favour of a reversal of Catholic Moral doctrine. If I were to give a source for saying the moon is made of green cheese it would be untrue the same as someone giving Newman as a source that doctrine can be reversed.would be spreading an untruth.
My comment was meant to illustrate this and to your credit you almost got it.