Environment Fog Light Modes

Im a bit confused as to how Light mode works in vray 2.0 in environment fog, unless i select “no lights” i get the same results, i have a few rectangle lights i have disabled light linking on (to the fog) and no matter what setting i choose i still get them affecting the fog. what can i do?

how do you unlink lights to environment fog?

I will try to attach an example.
envfog_lights.zip (7.54 KB)