Does anyone know how to do it?
Im curreently working on a BG and need to use 2 palletes for the same part of the image, to save tiles.

IIRC I asked  Dirbaio about this long ago and from what I remember, he doesnt know how to use both palettes. But yeah, it would be nice to use both palettes to make better backgrounds.
_________________________

It's only the *automated importer* that does not use two palettes. It doesn't because it's a very difficult problem to solve...

You CAN use two palettes if you open the graphic files manually, import your tiles, and then open the BG in the tilemap editor and use these tiles to make your background MANUALLY.