If i select the Projects to Archive from the dialog box how will this actually effect those issues? Is this just archinving for the Gantt On Demand or will they be archived in Jira?
Archiving JIRA projects is currently not possible in JIRA out-of-the-box, so I believe this might be a feature provided by a plugin. You may find the feature request for archiving old issues below:
I would recommend to vote on the feature above to increase its visibility with our developers and also to add yourself as a watcher to be notified of any future updates on it.
For archiving your current issues, you may follow the workarounds described in the link below:
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