We are thinking of migrating to JIRA from Trac. Our code repositories are hosted at GitHub. I've done a test import of the trac and then went to set up the link to GitHub. Nothing shows up in the commit tab.
Of course, since we've been using Trac commit messages have been referencing issues in the way Trac expects - i.e. Re #1234 or refs #1234. Is there a way to get the existing commits to appear under the commits tab (the issue numbers do match after the import)? I realise that in general there'd be an ambiguity, but we only have one project in our JIRA account. (Of course if we went with JIRA we would start including the correct key in the commits, but we would really like to have the historical commits fully included as well.)