ark dev kit materials to UE4?

hello everyone. i am using a heightmap made in world engine by dukes but it requires some materials i do not have in the regular version of unreal. it is however in the ark dev kit. how do i get those materials in? I’ve tried exporting and bringing it in but every time it says it doesn’t understand the extension

I dont think you are allowed to use the ark-kit content outside of ARK.