I have set up FishEye with ClearCase UCM and it generaly works fine. I have also been able to connect it with Jira and have it link to UCM activies that include the Jira Issue Key in the UCM activity name back to Jira. I have tried doing this by including the Jira Key in the UCM Activity comment but this does not seem to work.
My Question:
Is the UCM Activity Name the only thing that will link a UCM changeset back to a Jira Issue in the source tab when they are properly connected?