Improvement to Collaboration Migrations
In Teams to Teams migration scenarios, ‘Document Permissions’ is no longer selected by default
During a Teams migration, permissions for the files are inherited from the parent team by default. Some source files may have custom permission due to cross-team or external-partner sharing.
Migrating these custom permissions happens at the file level, requiring more API calls to the Source and Destination, increasing the likelihood of the migration being throttled. To avoid this, we recommend not selecting this option and informing users that custom permissions will need to be re-added.
Refer to our Teams Best Practices guide for more details.