The source removal step will keep or remove the gateway from DPOD.
This step does not perform any actions on the source gateway itself, it is your responsibility to disconnect or to change any the gateway's configuration
Choose "Remove Source Gateway" - to delete the source gateway's configuration from DPOD.
Even after the configuration is removed, you will still be able to see old transactions and syslog data in DPOD (depends on your storage capacity)
Choose "Keep Source Gateway" to keep the source gateway in DPOD after the migration is done.
After the Secure-Restore will be done, the target gateway will get the same IP of the source, if you wish to keep both - you will need to manually change the source's IP address and enter it in the input fields "New Source Gateway SOMA Address" and "New Source Gateway SOMA Port" of the source gateway.