added back preview

Author: Michael Bender

articles/virtual-network-manager/concept-user-defined-route.md

@@ -13,7 +13,8 @@ ms.custom: references_regions
 
 This article provides an overview of UDR management, why it's important, how it works, and common routing scenarios that you can simplify and automate using UDR management.
 
-[!INCLUDE virtual-network-manager-udr-preview]
+> [!IMPORTANT]
+> User-defined routes management with Azure Virtual Network Manager is in public preview. Public previews are made available to you on the condition that you agree to the [Supplemental Terms of Use for Microsoft Azure Previews](https://azure.microsoft.com/support/legal/preview-supplemental-terms/). Some features might not be supported or might have constrained capabilities. This preview version is provided without a service level agreement, and it's not recommended for production workloads. 
 
 ## What is UDR management?
 

articles/virtual-network-manager/how-to-create-user-defined-route.md

@@ -19,7 +19,8 @@ In this article, you learn how to deploy [User-Defined Routes (UDRs)](concept-us
 
 - Routing configuration to create UDRs for the network group
 
-[!INCLUDE virtual-network-manager-udr-preview]
+> [!IMPORTANT]
+> User-defined routes management with Azure Virtual Network Manager is in public preview. Public previews are made available to you on the condition that you agree to the [Supplemental Terms of Use for Microsoft Azure Previews](https://azure.microsoft.com/support/legal/preview-supplemental-terms/). Some features might not be supported or might have constrained capabilities. This preview version is provided without a service level agreement, and it's not recommended for production workloads. 
 
 ## Prerequisites
 

articles/virtual-network-manager/how-to-manage-user-defined-routes-multiple-hub-spoke-topologies.md

@@ -13,7 +13,8 @@ ms.topic: how-to
 
 In this article, you learn how to deploy multiple hub-and-spoke topologies, and manage user-defined routes (UDRs) with Azure Virtual Network Manager. This scenario is useful when you have a hub and spoke architecture in multiple Azure regions. In the past, customers with firewalls or network virtual appliances performed many manual operations to do cross-hub and spoke in the past. Users needed many user-defined routes(UDRs) to be set up by hand, and when there were changes in spoke virtual networks, such as adding new spoke virtual networks and subnets, they also needed to change user-defined routes and route tables. UDR management with Virtual Network Manager can help you automate these tasks.
 
-[!INCLUDE virtual-network-manager-udr-preview]
+> [!IMPORTANT]
+> User-defined routes management with Azure Virtual Network Manager is in public preview. Public previews are made available to you on the condition that you agree to the [Supplemental Terms of Use for Microsoft Azure Previews](https://azure.microsoft.com/support/legal/preview-supplemental-terms/). Some features might not be supported or might have constrained capabilities. This preview version is provided without a service level agreement, and it's not recommended for production workloads. 
 
 ## Prerequisites