The Management IP address is used as the source address for local services (for example, DNS) and as a destination for diagnostic tests (for example, pinging from another Edge). The Management IP is deprecated and is replaced with Loopback Interfaces.

You can configure loopback interfaces only for SD-WAN Edges that are running on version 4.3 and above. The Configure Loopback Interfaces area is not available for SD-WAN Edges that are running on version 4.2 or lower. For such Edges, you must configure Management IP address at the Profile level.
The Loopback Interface configurations can be done only at the Edge level. For more information about Loopback Interfaces and limitations, see Loopback Interfaces Configuration.