We were talkign with Tango in IRC today about the problem of Map-Paks being overwritten everytime there's an update. This is what he had to say:
TangoAE ok, I've brushed up on how maps work (its been a while).
TangoAE The intent was for custom maps not to go in resource_override, but instead be put directly into the /resources/interface/maps/ dir. This folder should protect from the patch.
TangoAE so if you want to make a new map, make a directory called /resources/itnerface/maps/MyNewMap/
TangoAE and copy the contents from another folder... modify as desired
TangoAE the patcher should not delete this custom directory
TangoAE can someone try that with a custom map they've made?
So... maybe one of you who designs the Map-Paks can weigh in on how this jibes with what you have designed or can try a mod to see if Tango's suggestion works. We also discussed the autocenter feature reverting the map to the 'Istaria' map but no resolution on that yet.