Has anyone had experience with incorrect number of moving bodies?

The Degrees of Freedom Dialog Box (using Motion Analysis) is reporting 1 more moving body (it calls the moving bodies parts, although they are rigid moving subassemblies for some reason), than there actually are.  Even if I count the number of subassemblies with in front of them, there are only 8.  Has anyone seen this before, and has a solution for it?

SolidworksMotion Studies