I don't believe that the eariler GI content was re-saved into a format the "respects" the new scaling options available on Carrara - however, it was bundled with C6. In C5, it was one-size-fits-all. In C6, you now have Small, Medium and Large. Consequently, all scenes would need to be retooled. I don't think that was done. :-P Personally, I feel it's a minor issue since rescaling groups make this a pretty easy fix.