I'm having the same issue. if these extra nodes are being added when you add a Z Wave device -- then there must be something in the U/D Z Wave "inclusion" programming routine that's adding them. Why? There must be a reason. I would think someone from U/D should know. Maybe it would be helpful if someone from U/D could clarify what's happening so we can find some logic to the situation.
BTW, adding my Jasco Enbrighten ZW4009 switch added similar number of nodes, although not with the exact same names and not in the same order as your device.