CINERENDER - Sectioned perspectives question

[Anonymous]

Is there a setting somewhere to allow the "sectioned out" bit of the model to still be invisible to camera but still be opaque & cast shadows in the view.
Maxwell Render has this option to allow to do sectioned perspectives but still have the real light within and not get the section flooded with light...

Right now I'm placing the sun on towards the camera and disabling the sky to get that sort of ambient but it's not good to show the interior distribution of light because the sky is missing and it limits it to specific times of day depending on the section plane.

Regards