On my phone you can update the maps for the regions. My guess as to why they go away is so it doesnt use up all your storage on the phone. Go to a region and click upgrade map
Oceansized.. Thanks. This brings up a question about cloud. About a week ago when going starting deer hunter I logged in with google. Now everytime I play it it keeps saying I am not connected to the cloud??? Can't figure out how to log of Google in deer hunter. Any ideas???