Hi Bilbom,
In the Prefercense for your Scene File.
Edit>Preferences [CMD-E]>>Preference Window>Files>Xref Project Load/Save.
Since you ask, you might have not change it, I would leave it on default.
Here are the options pertaining to XRef objects when opening or saving a scene.
Deferred Refresh on Project Open
Enable this option if you don’t want to refresh each XRef object contained in the scene automatically when opening a new scene. This can speed up opening a scene quite a bit, especially if you are loading your referenced scenes from a wide relative path. Keep in mind that, if you enable this option, you will have to update your XRef objects manually.
Reduced References on Project Save
Enable this option to automatically unload all XRef objects from the scene, when saving it. This allows you to save on file size, since the new XRef objects are by default saved with the master scene, and not considered as simple “instances” anymore for deeper interaction.
How far do you got with the support? I’m not certain how much limited access rights of the Client to the network will create a problem: Again, that is something for the support to guide you through.
Is the save with Assets working differently?
All the best