When you transfer your UV map, are you making sure 'Component' is selected instead of 'World' for the Sample Space setting in the Transfer Options?

Also, I'm not sure I fully understand as I'm an amateur when it comes to UV and Normal maps but if you're trying to transfer a UV map from a high poly model to a low poly model, then I don't think that works. I believe you can transfer a normal map from high to low, but not UVs. For UVs, I think both models have to have the same geometry. Sorry if I misunderstood your question.