I tried to replace male scale armor with platemail and blackrin armor. Replaced boots, arms, legs and helemet with blackring ones just fine. All works in game.

However I have replaced everything for all Scale chest pieces with platemail and nothing in game. It still stays as scale armor on my character.

https://imgur.com/a/jqYk8

On left is original Plate armor with Cape, on right is edited scale upperbody. Everything is maching. Yet model does not work in game...