Remove Clipping Reference

Hi,

I have a corridor that was clipped with a element in a referenced dgn, but that element has since been deleted and the corridor stays clipped. When trying to remove the clipping refrence, I'm trying to select the element but it will not remove it. Is there a way to see all the elements that are beeing clipped in a corridor? Is the only way to remove a clipping reference is graphically?

Thanks for your help.

Patrick