This question is probably to Blender gurus (maybe it was asked before but I did not find a reference).
Is there settings (in Blender\3DXchange, or some other application) to have UV maps generated the way, so that each side of the object is skinned individually.

Here's, as an example, a difference between iClone cube primitive and the one exported in Blender

76% of original size (was 665x19) - Click to enlarge