Mark,
Thanks for letting me know. As you might have noticed, this one is really hard to reproduce.
The current NORMA drop will regenerate any automatically generated name that has a duplicate on load. The primary scenario for this is to simplify merging different versions of the same model. It also has the side-effect of covering up this bug. The issue is still there, but you are unlikely to ever notice it because it is fixed automatically when the model reloads.
-Matt