Detach X-ref not an option.

I cant figure out why detach is not an option for an x-ref I have overlaid on my drg, there are other files attached to the x-ref in question, which I suspect is the issue. Can any one shed some light on this?

Briefly, the xref you want detach is an xref (A) attached (not overlaid) in another xref (B) in your drawing. That's the reason you cannot detached this xref. To do it you have to overlaid the xref (A) in the source file (B).

Here is an AutoCAD User Documentation about nested and overlaid xrefs: http://docs.autodesk.com/ACD/2010/ENU/AutoCAD%202010%20User%20Documentation/files/WS1a9193826455f5ffa23ce210c4a30acaf-5d72.htm

Nice one problem solved.

Thanks.