I made a model of a few books in a simple case with a turned rail in front.(image on left) The case was made with duplicated primitive cubes. The rail turnings were a replicated array. When I group all and copy to a new document (or export as a carrara model) I get the result on the right. All my geometry has collapsed to the primitive level. Anyone know how to copy my model to a new file? This seems to be a new bug in C4, at least I didn't ever run across the problem in earlier versions. Thanks, Ed