We have been running JIRA on our own for some time and recently have decided to start using the on-demand product when our license ran out.
We've also linked our google apps business account to JIRA for user management and things like that.
The problem is we have certain users that have been using JIRA a long time and they have a counterpart in the google apps domain.
What I am hoping to do is to move all of the user activity/stuff from the old external user to the google apps user.