Board Thread:Theories and Speculation/@comment-34661853-20181111160651/@comment-1512913-20181115071423

Not sure about the page, but the book literally mentions souls transmigrating. The way I umderstand it and it makes semse, is that the incarnates have 2 souls inside of their bodies, their own and that of Indra/Asura.

Obviously Edo Madara and Edo Hashirama were no longer incarnates, since the souls had moved into Sasuke and Naruto, respectively.