Video Tutorial from Starlight

CAUTION: Be careful with what the Anchor is, if the Anchors between the two maps are in the same location you can do this in the video, if the map’s Anchor is different it can cause issues, so if they’re different you’ll have to manually go inside the anchor and copy and paste the bits inside instead of clicking “deep copy”. Which is pretty simple it just takes an extra step.

NOTE: Make sure the dimensions are exactly the same before pasting it.

NOTE: This doesn’t really work between FireRed and Emerald, it has to be originated by the same Pokemon game

Happy Hacking!