Here the story. Beeing in the middle of spain an update informations showed up with updates for an area I wanted to visit next. As it was a slow line I selected for update only the necessary area and started the update. Finally only the updated area was available. All the other maps were gone. I took me about 12 hours to load down the maps necessary for my trip. You neasrly could see the bits dropping in like at a 50 Baud teletype. Thanks god the line had no interruption.