Which OneDrive for Business shared file and folder permissions are migrated?
When OneDrive for Business is configured as the source on a document migration, the only permissions migrated are for files and folders that are shared with specific people.
Files or folders in OneDrive for Business can be shared in one of three ways:
When files or folders are shared with anyone or with an organization, a link is generated for the items. These links are not accounted for by MigrationWiz and are not migrated to any destinations, including other OneDrive for Business accounts.