This is probably a real noob question, but it has me scratching my head. Hopefully it's an easy one for y'all to answer. And feel free to point and laugh, too. :matte-motes-big-grin: I built a house in Blender. Fairly large but not too terribly complex. Imported said house to the test grid, decided that the LI was too high (a tad over 100), and proceeded to separate it into several logical pieces in Blender. I then simplified each piece as much as I possibly could. So here's what has me a bit baffled: If I select all of the pieces, unjoined, export them together to .dae, and import to the test grid, they import as a coalesced object with a comfortable 27 LI. If I join them first in Blender, export them to .dae, and import to the test grid with the exact same export and import settings, they import with almost exactly twice (54) the LI. Da heck?