Terrain meshes don't have a UV channel

[vernal pasture]

Heya, I've been trying to get Dawn of War: Definitive Edition running with RTX Remix and got surprisingly far with it except for the terrain rendering. Right now it just refuses to render and capture. I can see some terrain textures and decals in the Game Setup but that's pretty much it. Could it be a shader or just something completely custom to Relics engine?
https://github.com/NVIDIAGameWorks/rtx-remix/issues/902
I tried Remix on previous editions of the game, while the terrain was buggy it actually rendered.

[thorn yew]

the definitive edition adds a lot of additional shader stuff afaik (particularly with the new specular/normal mapping they did across the game). I suspect some of this new shader stuff is what's confusing the Remix rendering here

[vernal pasture]

yeah, I checked the game files and they've added some cubemaps and material descriptions

[vernal pasture]

Terrain mesh found

[vernal pasture]

there is this one 1x1 px texture that I ignored before and now the terrain renders

[vernal pasture]

Terrain meshes don't have a UV channel

After the terrain was found I started playing with different ways of getting it work. Game uses a ton of decals so the terrain as decals should be the preferred one but I see that all terrain meshes don't have a uv channel. It includes the base terrain mesh and the decals. Any ideas?