Civil 3d Xref Verified -

Do not design directly inside XREF base files—base files should be read-only coordination tools. Avoid XREFing unnecessary drawings into source files.

is the best practice for team environments, as it maintains the connection even if the project folder is moved to a different server or drive, provided the internal structure remains the same. Advanced Civil 3D Workflows civil 3d xref

2. XREFs vs. Data Shortcuts (DREFs): What is the Difference? Do not design directly inside XREF base files—base