- Click .
- In the Reference Manager palette, select the underlay you want to detach.
- Right-click on the underlay and click Detach.
The underlay is no longer linked to the drawing file. All instances of the underlay are removed from the drawing.
Note: Erasing an individual instance of an underlay is not the same as detaching it. An underlay must be detached to remove the link from your drawing to the file.