Object based Reference Docs in Civil 3D
Autodesk's Jeff Bartels reviews the Civil 3D tool to link file reference documents to AutoCAD objects and Civil 3D Features.
See the Jeff Bartels YouTube Channel.
and the Civil Immersion blog.
This tool first introduced in Civil 3D 2018 can be very handy in project publish drawings when needed.
We must carefully place such file references in well thought out locations in our project file structure or face the negative consequences downstream.
Embedded hyperlinks to cloud-based public or private folders (which may hold multiple documents) may be easier to manage in many instances.
You might want to check how well the current Autodesk Connector for BIM 360 Docs identifies and handles these file references and content.