while ago there issue where you can't use ground textures from other routes to add your own routes because it baked. and on road map it was one of the thing that pc editor v2 was going to fix. is the dtg team still looking in to it?
Not quite sure what you mean, but you can use the ground textures from other DLCs to create your own landscape material. I'm not aware whether it ever has been issue to do so. At least since January when I started dealing with materials it seems to work.
ah well i did that and i thought it was going to be hard but nope it was easy. but i think i missed something. when i load a new tile it black texture. ok i got it worked out. there fill layer you click on to cover the new tiles with grass texture