Element External Requirements - Deleting?

[TS1]

If a requirement (say from a requirement model) is dragged onto a diagram element it automatically becomes an external requirement (a nice feature). But there seems to be no way remove or delete an external requirement from an element. Did I miss something?

[Aaron B]

Try using the Relationships window (View | Relationships), or the "Links" tab in the element's properties dialog.  You need to delete the Realization connection between your element and the external requirement.

[TS1]

Aaron,

Thank you for the quick response and suggestion.

The 'Delete Relationship' action from the 'Links' tab (in the Properties dialog) did the trick. I first tried the Relationship Matrix but was unable to have it show the Realization relation/link for the external requirement to the element (I also tried several other Link types to no avail). Is this a bug?