I think I found what the issue is but not sure why it is happening or how to fix it. When I look at the preferredservers.dat file in Windows PE it is only showing the core server as a preferred server and not the machine I want to map the image to. If I map the image to the core server it works fine but not if I try to put the image on the other machine. I checked the preferredservers.dat file on a couple client machines and both preferred are showing. Now I just need to find out why the .dat file is only showing the one preferred server on Windows PE.
Mike