Board Thread:Speculation House/@comment-36029176-20180630205831/@comment-4010415-20180630211621

I think that was only in the case of Pyrrha, not every Maiden. They said that the only way they could give Pyrrha the remainder of Amber's Maiden powers was to transfer Amber's Aura (her soul) into Pyrrha's body and fuse it with Pyrrha's Aura (soul). This would mean that Pyrrha would have gone through the same thing Oscar did, except voluntarily.

Basically, the effect would have been because of Amber's soul getting fused with Pyrrha's. If the normal Maiden power transfer works like Ozpin's soul transfer, we haven't been shown any signs of it. Though, that would certainly make things harder on Raven, if it does.