In the event we've discovered a bug that relates to an older bug that is now closed, we want to create a Related To link. However, every time I try to create this link, I get the following error "We can't find an issue with the key [URL to the issue]".
The issue still exists in the system, because I can easily go to that closed issue, and create a link back to the new bug, but that requires a lot of extra steps and is not intuitive.
How can I allow linking to closed issues??