Regenerate Multi-Domain SSL Cert and update extension DNS
Scenario: Cert was purchased originally for 5 years. Cert with that validity need to revalidate every 2 years as per https://www.digicert.com/shortening-validity-periods-for-ov-dv-certificates
However, the cert has been configured with the following SAN:
Problem: www.example2.com is no longer part of the same hosting and doesn't need the cert. However, 'example1.com' should replace it.
Solution: Regenerate the cert and add the domains "www.example1.com" and "example1.com".
NOTE: Not sure yet, but I think this is valid only when the main domain for the cert is "www.example1.com". Had it been "www.example2.com", the cert would have been invalid.