A New Default-3D model is generated with civil geometry or corridor model change.

We have a few users where a new Default-3D model is generated with civil geometry or corridor model changes in the same session.  On some machines a 3D model is generated and in other machines, the automatically generated Default-3D of a reference is reattached.  This will sometimes lead to a file having a hundred of the same reference and/or a hundred Default-3D's.  

All seed files came from the same seed on all files.

A reinstall will sometimes fix the issue with a complete cleanup/removal, but it's not guaranteed fix.  

We're currently running 08.11.09.845 Geopak SS4 with Microstation 08.11.09.714.  We also dual installed Geopak SS2 08.11.07.615 or 619 on some of these machines if that helps.

Has anyone had a similar issue?