To Selectively Delete Reference Clipping

In the References dialog ( Drawing > Attach > References dialog launcher ), select the references that have clipping to delete.
Click the Delete Clip icon.

The Delete Reference Clip tool settings window opens.
Turn on Use References Dialog List.
The clip boundary and any clip masks within the boundary highlight.
Identify the clip boundary, or clipping mask to be deleted.
Do one of the following:

Enter a data point for the deletion.

or
Reset to keep the highlighted clip boundary or clipping mask.
Repeat step 4 for each subsequent clipping mask.
Note: When you select a reference (or have one selected from the selection set, fence or dialog), the reference is highlighted. If there is a clip boundary and one or more masks, the boundary is shown in yellow and the masks shown in red.