Map Size problem

I’ve had weird problems with the map sizes and I think I’ve determined how it happens.

I go into map history from the icon, pull up one of the maps in the list. Then I resize that map. After that, every map I open via the map history is that size. However, if I go into the map list from the main screen and look at the map its the size I set it at originally.

I can display a map from the main screen, close it, and then immediately go to the map history via the icon and its a different size! Go back to the map from the main screen and its as if hadn’t been changed.