How to change the primary domain name and keep the existing one pointed to the site?
In this case we recommend the following steps:
- Change your primary domain from your SiteGround User Area -> My Accounts -> Manage Account (for the account whose primary domain you wish to change) -> Change Primary Domain.
- Park your old domain name in cPanel, Parked domains.
This will allow your site to work by both your old and new primary domain name.