Migration finished with successful status in migration manager. But subscription was not migrated, only client data was deployed on destination server.
Client's login matches the domain name.
Subscription is not migrated if the login of the customer who owns the subscription matches the domain name.
Such behavior is considered to be the software issue and will be fixed in future product updates. Internal request ID is PPP-6466.
As a temporary workaround you could change customer's login on source server before migration.