mkmap creates mines-style full-level maps, so it should wipe out all the room numbers in the level away. Also, it uses temporary rooms for making sure the map is fully joined together; those temporary rooms were left on the map, but should've been cleared away. When putting down map-parts on the level, don't remove the room data which would be under that map; the map may have holes in them (using the "x" map char), so a room may still exist there. I don't think it matters if there is any room data which doesn't have any room numbers referring to it in the level. (Usually the special levels use map right after level_init anyway, so there wouldn't be any rooms in the level)
15 KiB
15 KiB