Bumping this from the last post about three years ago, I've managed to update parts of the map to have new loot in treasure huts. Because the old chest blocks are different than they are now, the places where the old chests were no longer have chests, and instead had weird lighting glitches. I thank Hat Films for getting me into minecraft using this map. I also edited an end portal and nether portal in specific spots, and added an ender chest at spawn (with a second ender chest in one of the treasure huts as new loot.)
because of the way maps worked beta minecraft, directions were changed. East might now be north. Spawners might also no longer exist. We'd have to edit them back in if they don't.