[Map✓] Problem with editing existing tilesets

[Vitalo]

Hey, I have a quick question about editing tilesets.
I exported the secondary tileset from the petalburg map and edited / expanded it. But everything that goes beyond the original size is displayed as a black block ingame. Do I need to adjust the tileset size somewhere else? In graphics_file_rules I have simply entered 512.
The original tileset size is 128x80 and I expanded it to 128x256. And the original metatile number was 216 and now it is 256.

I've attached two images. One how it looks in porymap and one how it looks ingame. (Pls ignore the tile errors, I haven't finished mapping yet :D)


Edit:
Problem solved. "make clean" works wonders. :D