SSL support checkbox should exist when we select
Exclusive IP while migrating a brand according to the guide Migrating a Brand, but such checkbox is missing.
It should be possible to enable SSL support during Brand migration otherwise Brand will have SSL turned off after migration. The issue has been fixed in OA 5.5 update 9.
Please update to OA 5.5 update 9 to fix the issue. To workaround the issue please enable SSL support manually in CCP via
Web Hosting Settings for the Brand.