When you transfer customer data from one server to another, you may want to move the IP addresses from the source server to the destination server as well, as failing to do so may result in DNS resolution issues, break your customers' customizations, and so on.
To move the IP addresses from the source server to the destination server, follow these steps:
Note: Be sure to map every IP address on the source server to a separate placeholder IP address. To avoid confusion, you can create internal IP addresses in the 10.*.*.* range so that the last three octets mimic those of the source server IP addresses'. For example, to map the IP address 188.43.64.218, create an IP address 10.43.64.218 on the destination server.
Note: Make sure that you map routable IPs to the corresponding placeholder IPs. That is, if you mapped the IP address 188.43.64.218 to the IP address 10.43.64.218 during the transfer, make sure you map the IP address 10.43.64.218 back to 188.43.64.218 and not some other IP address during this step.