I used to ROM Hack. It's been years since I have, so my memory of hacking has completely gone as well. I want to pick up on it again, but yeah. Who knows.
About your map, that really sucks. : (
What was your hack called?
It's been so long since I even picked up a ROM Hack tool so I forgot about ROM hacks. I had one I was working on and I had it saved on my USB, almost done with mapping the whole region until it decided to become unreadable. I stil have it just in case it will somehow work, but I'm not getting my hopes high.