Civil 3d Xref Guide
: If you XREF a drawing containing data-shortcut objects, those objects will appear static and cannot be styled or queried. The general rule is to use data shortcuts for Civil 3D objects and XREFs for everything else.
Misunderstanding how Civil 3D handles XREFs can lead to broken paths, duplicated objects, and project crashes. Mastering them, however, unlocks the true power of collaborative civil engineering. civil 3d xref
Type and press Enter to open the External References palette . : If you XREF a drawing containing data-shortcut
Are you collaborating across a or via BIM 360 / Autodesk Docs ? and project crashes. Mastering them
Follow these steps to attach an Xref to your Civil 3D drawing: