Select the corresponding device in Starwind Management Console. In the right side window, click the Replication Node Interfaces. In the window that will appear, you can edit heartbeat and synchronization channels’ settings on the fly.
NOTE: Do not delete all the interfaces at a time and avoid situations that would result in having all the replication node interfaces down. If all the IP addresses from the Replication Node Interfaces list are to be modified, change them on the entire network stack one by one on both sides (e.g., change heartbeat IP addresses on all partner nodes first, then, modify synchronization IP addresses).