updated note

Author: MGoedtel

articles/aks/csi-storage-drivers.md

@@ -18,7 +18,7 @@ The CSI storage driver support on AKS allows you to natively use:
 - [**Azure Files**](azure-files-csi.md) can be used to mount an SMB 3.0/3.1 share backed by an Azure storage account to pods. With Azure Files, you can share data across multiple nodes and pods. Azure Files can use Azure Standard storage backed by regular HDDs or Azure Premium storage backed by high-performance SSDs.
 
 > [!IMPORTANT]
-> Starting with Kubernetes version 1.21, AKS only uses CSI drivers by default. CSI migration is also turned on starting with AKS 1.21, and existing in-tree persistent volumes continue to function. However, internally Kubernetes hands control of all storage management operations (previously targeting in-tree drivers) to CSI drivers.
+> Starting with Kubernetes version 1.21, AKS only uses CSI drivers by default and CSI migration is enabled. Existing in-tree persistent volumes will continue to function. However, internally Kubernetes hands control of all storage management operations (previously targeting in-tree drivers) to CSI drivers.
 >
 > *In-tree drivers* refers to the current storage drivers that are part of the core Kubernetes code opposed to the new CSI drivers, which are plug-ins.