What would happen if you save the completed figure as a partial scene and then bring it into the scene.  Open the contextual menu under File and navigate down to Export, select the first entry, Partial Scene... .  A panel will open that will contain a list of all the figures/props/lights/cameras in the scene, select all the pertinent objects you want to save and press OK.  Save that file to a convenient location, I have a folder called Partial Scenes on my computer.  Once you're ready to reintroduce the figure back into a scene, go to Import>Poser Document/Prop... and select your Partial Scene.  

The other alternative is to save the figure CR2 back to the Library.  Either way, the figures are handled and saved separately and crosstalk minimized.