double surfaces

 From:  toonafish
6724.1 
Hi,

I ran into this weird bug where I end up with double, triple, or even quadruple nurbs patches after saving and reloading a file. The same happens when I join several objects.

The first time I thought I made a mistake by accidentally copying and pasting stuff, so I fixed it manually. But after saving and reloading the file, the exact same problem re-occured.

I tried using the Moi 3 beta, but that did not help either.

Does anyone know if this a known issue and how to solve it ?

I've put the file in Dropbox if anyone with more experience in Moi would like to check it: https://www.dropbox.com/s/asx0at7eqm0pvy9/starmania_work_v18.3dm

Thanks,

-Ronald