Good evening Frood :)
Hmmm that doesn't sounds good for me apparently ... I really need some more automation to smooth my workflow as much as possible. In a nutshell, I use Pulze Scene Manager (& Render Manager FYI) as batch rendering tool, and I really love it, so I need to optimize LightMix creation to avoid too many layers, when my camera is in another area for example, or simply for different furniture arrangements. Obviously, I'd rather avoid splitting this in different scenes, too bothering for me and not very efficient IMHO.
I hope Corona guys will see this subject and will have something to propose :)
Anyway, thanks for trying to help,
Good night :)