Basecolor or Diffcolor AOV
Very tricky, so I put it here to remind myself. If you want to create a basecolor or diffcolor AOV (and possibly more) you need to make sure you add this rendering property to your mantra node. It’s called vm_bake_layerexport.
I’d never remember this, so here it is to remind myself.
Much cleverer Houdini users than this helped me out here. Cheers Toadstorm and Lcrs!