The guests on an OEM licensed host can be moved to another host whether it's licensed OEM, VL, or Retail so long as the destination host is licensed to receive those guests.
That makes no sense. That's not moving it, that's buying it twice. Very different things.
That's like "can I move my house from here to there"? People mean take the same house and shift its location. Not buy a second house in the new location and give up the old one.