When migrating VMs with shared disks using copyoffload, the VM that was migrated with the option to skip shared disks migration doesn't get the shared disk automatically attached after the migration. 

Migrated two VMs with shared disks: the first VM is migrated with a migration plan with the option to migrate shared disks, the second VM is migrated with a second migration plan, this time the option to migrate shared disks is disabled. The shared disk should be automatically attached to the second VM after this is migrated.

2.11

Always

1. Migrate one VM with a shared disk, using a migration plan with the option to migrate shared disks
2. Migrate the second VM using a migration plan that skips migration of shared disks

I need to manually attach the shared disk to the second VM

The shared disk gets automatically attached