Is it possible to get VRayLightselect on matte objects?

[Raven]

I am trying to setup a scene where I can render the BG once then set it to Matte and render a whole bunch of objects.
But when it is Matte i no longer get my LightSelect pass for light falling on the BG. Is this even possible?

Thanks
Gavin

[vlado]

Hm. So would you get the shadow on the matte object? Or the lighting? Normally people want matte objects to just stay black in all channels.

Best regards,
Vlado

[Raven]

Yes Vlado, I'm trying to cheat a bit.
I want it in the Light select as the titles we have have lights in them that I want to cast light onto the floor.
So I would want as per Vray Properties In the Direct light options. Like the check box for Shadow, one for Light and Specular, so the Light Select can carry that info.
I wanted to see if I could cut down on rendering the BG every time we render a new title, as they are in a concrete infinity curve.