In 3dC, during import object, select "W/O voxelization".... This will import separate named objects on their own layers... You can then voxelize layers 1 by 1 if you want voxels.... This is good too because you don't always want "4 million polys" to get detail on a box", like you may need for a blob of some sorts... Each object can have it's own poly count settings...