Are you changing the station using the tuning controls while already on the consumption screen? If so, it is operating as designed I think.
That said, it sounds like you are not just using the tuning controls...I do recall seeing something what dealt with returning to the map someplace. Look in MENU -> Setup.
I will have to look later....work comes first
Larry (Horaldo) -- after we get an answer for this I think we should put it in the FAQ.