SSL + Domainpointers

Ok so we are using multi-store for 20+ different websites. There are all non HTTPS. I just created SSL certifcates and want to switch to SSL.

Everything looks great (Certifcates working ), but after changing to https://www. we see the MAIN STORE...

Done all this so should be correct right?:
- Changed http://www.subdomain2.com/ to https://www.subdomain2.com/
- Domainpointers are set in Directadmin (working for years this setup)
- SSL Certificates are ok
- Changed the config.php define('HTTPS_SERVER', 'https://www.maindomain.com/');

Hope someone knows what i'm missing?

Any changes made to htaccess?

No no changes made and also tested.. Now i'm setting up SSL for another client, with 3 multishops.. same problem..
When https:// all the other shops go to the main url.

Looks like an opencart bug? Any body knows the problem?