Board Thread:Theories and Speculation/@comment-4080775-20151225185754/@comment-27142977-20151226051900

Personally it makes total sense to me. What he said was pointed out by Kishimoto. And those eyes were transplanted by other Uchiha members, and they could be known as fake or real. Judging by the fact that nobody took Rinnegan out of the Six Paths, because, as Madara was being revived by Obito/Black Zetsu his Rinnegan dispersed. So it probably works like that, but since Obito's Six Paths of Pain were reincarnated first, this could've took a major toll on the tide of what happened to the Rinnegan after they died.