Sharepoint Processing error "Failed: MigrateAccount: Could not resolve account name" appears in the QsSharePointProcessingWizard.log
The name of the account in the log is an Active Directory Group name. At this time the Sharepoint Processing Wizard cannot update permissions based on AD group membership. This is outlined in the Migration Manager Release notes.
There is no workaround at this time.
Quest ® Migration Manager
Version 8.2 Release Notes
States: "Sharepoint Processing - Active Directory groups are not processed."