would you mind rendering the glass with liquid you posted in this thread in the latest build?
I have lots of doubts that pushing the liquid in the glass renders correctly with 1.46.13. Splitting the mesh to apply three different materials (like I posted in that same thread) does work correctly though.
Well, I was rendering with glass object and fluid object assigned the same material from the same material slot. Then Vray gets confused (obviously) and it renders as inverted IOR or something.