I added an IP address to my server, then added it through ISPConfig. Is there a way change a website's IP address? I tried it just changing it in the settings, and it creates what appears to be a default website.
Add the new IP under System > Server IP and then select it in the website settings. Ensure that you dont mix * and IP addresses on your server, as an IP is always a stronger match then an IP. So eithet use * for all sites that point to an IP or use the IP, but dont mix that.