First off, you should try spreading out your thread topics more, take time to enjoy each of them for a while before making a new one

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Anyway, in regard to your question, I'd assume their minds would essentially be deleted. I don't think they have memories of the Juubi and I think as soon as the Juubi is restored, its memories will return and the memories of the individual 9 will no longer exist. After that, I don't think it will be possible to turn the Juubi back into the original 9. I think only the sage could do that again if he wanted to.
I might be way wrong about this, but I simply feel if the Juubi comes to be, the 9 beasts as we know them, their minds included, will be gone forever.