We have for the past year been using Jira Service Managment, and our Users/Clients are happy to report and solve/comment issues.
In a recent domain change we have changed from .dk to .com on our mail domain, and this now provides a lot of grief and questions about cases which are now "stuck" with usernames/mails to the .dk domain.
Is there anyway to edit all Clients or append the new mail domain .com?