Clip Boundary inactive reference panelThe issue is, that the icon for the Clip Boundary tool in the referencedialog box is grayed out when in DWG workmode.Product: MicroStation V8iVersion: 08.11.05.17Area: Reference
Workaround:1. Place a fence where you wish to cut.2. Right click on the drawing in the Reference dialog box3. In the tool box press the Clip BoundaryOr update the version, the issue has been fixed in the newer version ofV8i Select Series 1.
https://communities.bentley.com/products/microstation/w/microstation__wiki/32464/not-possible-to-define-a-reference-clipping-boundary