RVT Landscape Material - Only Albedo showing in Layer Blend

Hi there,

I could use some help with a problem I am having with my landscape material. I have a RVT Landscape Albedo and Height setup however the layer blend materials only have the albedo map coming through as shown in the first image. The texture seen painted down is the ‘Layer Dirt’ inside the Layer Blend node.

I am sure I missing something blatantly obvious with my setup, any help would be great. I can provide more screens of setup if needed.