Rcs.iss created prior to October 2020 cannot be added to a VPC network without changing its IP address. Any Rcs.iss created since then have VPC functionality enabled by default and are added to the region’s default VPC network unless you specified otherwise during the creation process. You can still add Rcs.iss created prior to October 2020 to a VPC network by migrating them using snapshots, but they will not retain the same IP information. If you have a domain name directed to the original Rcs.is, you’ll need to update its DNS records to point to the new IP address.