This issue has been resolved by Microsoft Cloud Provider.
Posted Mar 26, 2021 - 12:33 UTC
Our cloud provider has confirmed they are experiencing intermittent issues that could impact some On Demand Migration customers when migrating Public Folders. We are monitoring the situation and will update as soon as we know more.
Posted Mar 25, 2021 - 15:12 UTC
This incident affected: Migration for Email and Public Folders (US Region, Australia Region, Canada Region, EU Region, UK Region).