ProceduralMeshComponent::CreateMeshSection has a CreateCollision checkbox. At least on the RuntimeMeshComponent there are additional functions to create Collision section. Though these would be imported as Meshes as well. You can prefix them and filter in import.
It might be possible to also create a UStaticMesh from the data, but you would need to check that for yourself. Keep in mind that there is Editor and Shipped. Things that work in the Editor might not work in a Shipping game. I gues there are reasons for why Unreal created ProceduralMeshComponent.