Wait what? I don't see where you have to physically play on the map to save its changes to Map_Data.abs
The Map_Data.abs file is only written to in the method check_map_data, which is called when $BlizzABS is created, which takes place before Main is even reached. It goes through every single map ID present in your project upon play-testing.
There's also no such thing as Map_Infos.abs in the BABS scripts.