unloading gmaps or something?

[Jiroxys7]

So i had a massive gmap running. it was taking too much cpu to keep the whole thing up. So the gmap was disabled, and i've been working on cutting out the islands into their own gmaps (which i planned on doing a long time ago anyway for various reasons)

So i've cut out an island and put it in its own gmap. problem is, since my computer has already loaded the giant gmap, i cant see if the new, smaller gmap is working right or not. So i figure that i need to delete something that's storing the old gmap data. But FILENAMECACHE and the gmap file in graal/maps/ doesnt seem to be it either. Anyone know what i need to do?