In Maya, if you animate the visibility of an object it doesn’t render in the colour, or any other pass.
That’s not the case in Max.
I have some Forest Pack grass and I’ve animated the visibility by making a visibility track. It works in the colour pass but not in the occlusion. I can see in the scene that the grass is still there so even though it’s invisible to render, as it’s still in the scene, the AO still sees it.
Is there anything I can do about this? Can I animate a layer, or the light bulb for the grass? I want it gone, not semi-gone.