An SSL certificate subscription example.com was moved from one account to another, but the old account is still displayed under Service Director > SSL Manager > SSL Certificates > example.com.
Although the Change Account button is displayed for SSL subscriptions and it allows to change the owner of an SSL subscription, it is not possible to actually change SSL certificate account: such operation would require on-the-fly change of SSL attributes like Organization, Address, etc., which is impossible.
The only way to change the certificate owner is to re-issue the certificate.
Starting with OBAS 4.5.7 unnecessary buttons Change Account, Put On Hold, Change Hosting Plan, as well as Resources and Domains tab, were removed from SSL subscription page.
To get rid of those confusing buttons, please upgrade to 4.5.7 as described in How to upgrade OBAS system to the latest available version.