I've just started playing with 'scene sets'.
I am able to change the materials in a model and save it as a new scene set and then toggle between the two.
I want to have different backplates for the two scene sets but when I change the backplate in 'scene#1' it changes in 'scene#2' also.
What am I missing?
From the 'What's New? document...
Scene Sets (Pro)
All your scenes in one, with multiple cameras or Viewsets. Scene Sets give you the ability to have access to all design iterations and camera views in a single file. Toggle parts on and off, switch cameras with ease and flow through the sets with a single hotkey.
How it works
Now called Scene Sets, Model Sets have been updated to included assigned Cameras and Viewsets. Import your models, duplicate or pattern a model within KeyShot. Create Camera Views or Viewsets from the Projects, Camera tab. Viewsets can each have different Environments or Backplates applied to them. Scene Sets are available in all licenses of KeyShot Pro.
To create a Scene Set, right-click Scene Sets in the Projects, Scene tab and select Add Scene Set. Name your Scene Set and select a specific Camera or Viewset to use. These can be changed after saving a Scence Set, by selecting a Scene Set in the Scene tree and changing the Name or Camera in the Scene Set properties. To switch between Scene Sets, double-click the Scene Set to switch to it the Scene tree or use Shift-M to toggle through Scene Sets.