And no no that is easily fixed with the connection editor. You can move the map in the data of the ROM so it can meet with the other map, you don't have to make them the same size. I'll show you how to do it later, do the connections last.
Yeah tested that,the boder only works from up and down..but sideways??
btw,do all maps must be same size,cause i have these problem where my first town and route are not same size but the route path combine together with the town path but when i enter the route then looking back at the town,the tiles messed up,when i reenter the town,the map messed up like it is shifted and the path is not together again..maybe if you can't understand,i can show you pic..lol
Border Tiles (4) are the tiles that appear EVERYWHERE around the map itself, right out of its borders (that's why border block, which must be repeatable by itself to work). Remember, you can't see the border block in your a-map thing, but you can see what its tiles are in the "Border Block" thing.
B= Border Blocks, S= Map you can see through a-map