I just discovered a wierd thing. I have been working on a Titanic model (imported low res 3DS with JPG texture images and I have added lots of booleans, primatives). The ship now has a large number of meshes, polys and textures on various surfaces. When I save the grouped ship object as an OBP file it is 11.6Mb in size.  When I save the scene file with the ship, the scene file is 5.2Mb.  Why is this so?  Have they rewritten the code for saving the scene file in a more economical way whilest leaving the export/save OBP with the old code perhaps? 

Anyone else experienced this?

If this is a feature of Bryce 6, then it will pay to always save the scene rather than just save the objects as OBPs...