Thanks, the Vray isn't really a work around as we don't use it.
Re rowmanns, it's great to know it's in the works but any more info re timescale would be very helpful.
It's a major issue in workflow for Sketchup>3ds Max/corona, for us at least, so I would presume a lot of others would encounter the same.
Once again unless I am missing a step that allows this problem to be avoided.