Editing Links in RRC4.0

Hello,
I am trying to link my business requirements to my process flow diagram.

I was able to create initial links but now I want to edit these links i.e. remove a link or change the traceability from "link to" to "satisfies".  Every  time I try to edit, it creates a new link.  I end up with multiple links to the same BR.

See attached image:
FCOO2 was the original link, rest are the edits I tired to do on the same link.
If I click "x" to delete any of these links, they do not delete.