Anyone know if I can use contribution maps to render reflections selectively? It seems like all objects are reflecting in my tests, regardless of their associations in contributin maps. To be more specific...

I have a car lit with many light boards. I would like to render a multipass output where each lightboard is a seperate file or color channel in an exr. What I've done is create a contribution map for each lightboard. The car is in each of them as well, of course.

after creating reflectin passes for each contribution map, and assigning them to their respective contribution map, each pass has all the lightboards in it... not just those contained in their contribution map. I would have expected individual reflections in individual passes. Any thoughts as to where I'm going wrong?

Andrew