LENS Managers can access (and retrieve) archived updates from the archives
click the hamburger menu (top of the left nav bar)
click "admin" (must have manager level access)
expand "updates" section
click "manage updates"
The archived updates appear at the bottom of the list with a grey icon.
This is an overview of all live and archived updates. Once you locate the update you wish to unarchive, select the 3-dot menu at the far right of that update and click on the option to Unarchive.
Once you have successfully unarchived your update, it will appear on the Today page as a pinned update or within the Update panel on the Today page depending on its settings.
Additional Resources on Updates: