For CAD in general though we find that we have to sync local the drawings, xrefs and drefs (C3D folder)
Our file structure for each project contains all of these inside the Drawings folder so we can easily control whether we have a project synced local by syncing only the drawings folder for the project.
Did this issue ever get resolved? I believe it has something to do with when you access a sheet set manager through egnyte connect it gives ownership over to the Computer "EgnyteDrive" and therefor locks out anyone else that isn't that computer from manipulating the sheet set manager.
I would love to hear if anyone has got it to work as intended through Egnyte Connect. I don't really want to use a work around on local drives since that kind of defeats the purpose.