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returning items from archive mailbox

Nikolai Melekhin 116 Reputation points
2021-09-14T09:37:16.927+00:00

Hello! We've got Exchange 2016 server and Retention Tags and Policies set on it.
One of tags is to move items to Archive after 1 year.

So, it works and all items older than 1 year are already in archive database.

The question is: they want us to change policy from 1 year to 3 years and to get items back to main mailbox.
If I just change 1 year to 3 in Retention tag, will items go back automatically or I should start EMS script?

Exchange | Exchange Server | Management
Exchange | Exchange Server | Management

The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.

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Answer accepted by question author

Vasil Michev 127K Reputation points MVP Volunteer Moderator
2021-09-14T11:47:23.807+00:00

No, changing the policy will not move items that are already in the archive back to the main mailbox. You can either move them manually via Outlook/OWA, or use a script-based solution. Here's a sample script: https://github.com/David-Barrett-MS/PowerShell-EWS-Scripts/blob/master/Legacy/Merge-MailboxFolder.ps1
And the help file: https://github.com/David-Barrett-MS/PowerShell-EWS-Scripts/wiki/Merge-MailboxFolders.ps1

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