Help! - Separating refracted objects

[rory_sparks]

Hi, I'm working on a set of renders for a client who has asked for certain refracted elements to be separated out so they can continue working on them in Photoshop more easily. I'm completely stuck with this request, and cant tell if I've forgotten something simple, or this is just something I haven't come up against before.

Is there any way to render out the refraction result of a selected object for compositing (e.g. just the red egg part shown below)





Many thanks!

[hermit.crab]

Add a MultiMatteElement to mask the ball out of the VRayRefraction? Make sure the refraction of the glass is set to affect "All channels".