I cannot force to select an Epic when creating a story or bug issue, so I want to create a rule to update the field "Source" in the new issue, whenever that issue gets linked to an Epic with the Epic's "Source" field value. Basically to keep them sync.
If that already linked issue gets updated to be linked to a different Epic, then the rule would update the "Source" field value in the issue to be the same of the new Epic linked.
Thnx!