public IP docs - Update public-ip-basic-upgrade-guidance.md

Author: mbender-ms

articles/virtual-network/ip-services/public-ip-basic-upgrade-guidance.md

@@ -40,7 +40,7 @@ We recommend the following approach to upgrade to Standard SKU public IP address
   | Virtual Machine or Virtual Machine Scale Sets (flex model) | Disassociate IP(s) and utilize the upgrade options detailed after the table. For virtual machines, you can use the [upgrade script](public-ip-upgrade-vm.md). |
   | Load Balancer (Basic SKU) | New LB SKU required. Use the upgrade script [Upgrade Basic Load Balancer to Standard SKU](../../load-balancer/upgrade-basic-standard-with-powershell.md) to upgrade to Standard Load Balancer |
 | VPN Gateway (using Basic IPs) |At this time, it's not necessary to upgrade. When an upgrade is necessary, we'll update this decision path with migration information and send out a service health alert. |
-| ExpressRoute Gateway (using Basic IPs) | New ExpressRoute Gateway required. Create a [new ExpressRoute Gateway with a Standard SKU IP](../../expressroute/expressroute-howto-add-gateway-portal-resource-manager.md). For non-production workloads, use the [migration script](../../expressroute/gateway-migration.md). |
+|  ExpressRoute Gateway (using Basic IPs) | New ExpressRoute Gateway is required. Follow the [ExpressRoute Gateway migration guidance](../../expressroute/gateway-migration.md) for upgrading from Basic to Standard SKU.  |
   | Application Gateway (v1 SKU) | New AppGW SKU required. Use this [migration script to migrate from v1 to v2](../../application-gateway/migrate-v1-v2.md).  |
 
 > [!NOTE]