The Cosmos and the Soul

Platonius' view is that the soul and body don't have to be identical through time. He's concerned that as long as there's flux, he's concerned that maybe the body and soul will come apart. And in fact, that is what happens to humans, right? So they lose a body, then their soul goes into a new body later on. Why doesn't that happen to the cosmos then? That's an interesting sort of test to see how Platonists deal with this sort of question.