Hybrid migration to Office 365, mailbox rights such as Full Mailbox Access, Send As and Send on Behalf are not getting migrated (4247211)

Hybrid migration has been set up. Source users are located in on-premises Active Directory and source mailboxes are in on-premises Exchange, users migrate to target Active Directory forest and mailboxes migrate to Office 365 using Quest Migration Manager. Microsoft Azure Active Directory Connect is set up to synchronize users from target on-premises AD to Office 365. Everything is working as expected, however mailbox rights such as Full Mailbox Access, Send As and Send on Behalf are not getting migrated.

Is there a way to migrate these rights?