Thank you for posting this!! I've been trying to link my maps for a LONG time. I ended up using an entrance tile and putting the link at the top, rather than an entrance tile at the bottom, with the light(you know, like entering Mt. Moon). As long as it works, I guess
EDIT: Random question. What are SEVII ISLAND 22, 23, and 24? I hope they're unused maps, because I changed the name of SEVII ISLAND 22 to ENIGMA CAVE and gave that name to my new map.