September 03, 2011, 11:22:53 am
Sometimes with the way Lumion displays a selected material (re colour highlights all surfaces for material matched), it can look like the user has ended up selecting more or other surfaces than the just the ones they expected.
This may happen especially for floor level based material surfaces, or some walls depending on where viewing from. Visually, it looks like it's including other objects surfaces as well, but only because its showing you the full extent of the surface areas.
As Gaieus mentioned, there's no problem with the SkUp and Collada files.