To Unload or Reload an Underlay

1. Click Insert tab Reference panel Dialog box launcher. Find
2. On the External References palette, make sure all references are displayed by switching the Missing toggle off.
3. In the File References pane, right-click the underlay you want to unload or reload and choose Unload or Reload.

   When unloaded, the underlay is still linked to the drawing file, but it is not displayed in the drawing.