I have following problem: My map screen is all distorted after I enabled and disabled Morrowind Core Patch Extend Map option a few times. Is there a way reseting the map such a way that it's shown properly again? It's really a mess right now, the old larger and the Morrowind Patch extended map is now shown top of each other and it's a mess.

With Wrye Mash, there is an option in menu called "Update map", it could be useful in your case.