Two things are likely to happen. One, the living larvae will eat the dead ones and two, some of the frozen population will turn out not to be dead after all.
I don't really see a downside to the move, other than possibly overloading the healthy bin(s) if you add too much too fast - but if you're running multiple bins, you already know that stuff
Side note, how are you keeping them warm in Michigan winters? It's on my list of things to do when the wife and I get set up in Michigan and I have not figured out how to do it yet