Merge pull request #98666 from zr-msft/aks-auth-range-clarity

[AKS] added clarity to note

Author: PRMerger9

articles/aks/api-server-authorized-ip-ranges.md

@@ -19,7 +19,7 @@ In Kubernetes, the API server receives requests to perform actions in the cluste
 This article shows you how to use API server authorized IP address ranges to limit which IP addresses and CIDRs can access control plane.
 
 > [!IMPORTANT]
-> On new clusters, API server authorized IP address ranges are only supported on the *Standard* SKU load balancer. Existing clusters with the *Basic* SKU load balancer and API server authorized IP address ranges configured will continue work as is. Those existing clusters can also be upgraded and they will continue to work.
+> On new clusters, API server authorized IP address ranges are only supported on the *Standard* SKU load balancer. Existing clusters with the *Basic* SKU load balancer and API server authorized IP address ranges configured will continue work as is but cannot be migrated to a *Standard* SKU load balancer. Those existing clusters will also continue to work if their Kubernetes version or control plane are upgraded.
 
 ## Before you begin