Just to clarify. I meant tens of thousands of Kantekkian spacecraft. I appreciate that the greys used 4D methods to transfer the Kantekkians.I don't think we can expect much more than some reasoned speculation about the hidden history of an entire planet that no longer exists. Unless, of course, somebody stumbles on the magic key to the Akashic Records and becomes a kind of benevolent cosmic search engine.
We've learned from the C's that 4D STS exists outside of linear time. So if we suspend notions of linear time, then moving hundreds of millions of people in "just a week" is entirely possible - even without tens of thousands of spacecraft.