Board Thread:News and Announcements/@comment-4698889-20180724122634/@comment-6986530-20180811015513

If Irina was made with Maria's cells, then Irina would be a clone of Maria, not Maria reborn. Which means that Irina reincarnated into someone different from herself and would theoretically pass on into the Fourth Period as Maria.

It's too soon to say what that part of the song means, especially when as Tobimisa pointed out the timeline doesn't add up.