I have an old JIRA 3.x with no extra plugins and simple workflows.
Now I want to switch to a new JIRA 6.x . I searched answers.atlassian.com and the JIRA documentation, specially the import section but I only found tips how to restore projects. But I found nothing about importing old xml data into a new Jira.
Is it possible to export the 3.x the data into an XML file and import this into the 6.x Jira? Has anyone tried this?