Hi Hugo
Normal behaviour for the "Contributing content" link (which is the same type of the owner link - EPMBuildRue ) when you save as a WTpart is to create a new Wtpart without CAD link.
Since 10.0, we work on a "multi owner" functionnality with PTC. Where this behaviour change. when save as the WtPart, we keep the^link to the same CADdocument. It is controlled by an hidden preference.
We faces some issue about access rules when performing the Build process (ie synch CAD and associated multiple WTpart) when the CAD user has no access to the related WTparts.
Sounds may be the reverse case. hope that is not a side effect of the multi owner enhancement. cause agree with you. In case of mono ownner config, should work without error.
regards