Merge pull request #127447 from maotsuk/patch-15

Need to add explanation of script behavior for AppGW backend pool  - Update public-ip-upgrade-vm.md

Author: v-dirichards

articles/virtual-network/ip-services/public-ip-upgrade-vm.md

@@ -108,6 +108,11 @@ There is no way to evaluate upgrading a Public IP without completing the action.
 
 Yes, the process of upgrading a Zonal Basic SKU Public IP to a Zonal Standard SKU Public IP is identical and works in the script.
 
+### If I specify a NIC associated with a public IP targeted for migration in the Application Gateway backend pool, will this script remove it from the pool?
+
+Yes, it will be removed. After running the script, you will need to manually reassign the NIC to the Application Gateway backend pool.
+Alternatively, you can avoid this issue by explicitly specifying the private IP address in the backend pool configuration before migration.
+
 ## Use Resource Graph to list VMs with Public IPs requiring upgrade
 
 ### Query to list virtual machines with Basic SKU public IP addresses