My bad, didn't realize it was "only" to a different room, I assumed the worst! Well, ignore my advice... They must have SOLD the concierge rooms to an incoming group at an inflated price.
I'm PP and LTP and many times have gotten "we're sold out up there". No one is moving anyone to accommodate me for a "lesser" PLT.
You definitely should have a conversation and be compensated in some smaller manner. You still weren't under any obligation to move.