OSDOCS-5325: 4.13 upgrade support

Author: kelbrown20

modules/multi-architecture-upgrade-mirrors.adoc

@@ -8,6 +8,8 @@ toc::[]
 
 An {product-title} cluster with multi-architecture compute machines is a cluster that supports compute machines with different architectures. Clusters with multi-architecture compute machines are available only on AWS or Azure installer-provisioned infrastructures and bare metal user-provisioned infrastructures with `x86_64` control plane machines. 
 
+For information on migrating your single-architecture cluster to a cluster that supports multi-architecture compute machines, see xref:../updating/migrating-to-multi-payload.adoc#migrating-to-multi-payload[Migrating to a cluster with multi-architecture compute machines].
+
 == Creating a cluster with multi-architecture compute machine on Azure 
 
 To deploy an Azure cluster with multi-architecture compute machines, you must first create a single-architecture Azure installer-provisioned cluster that uses the multi-architecture installer binary. For more information on Azure installations, see xref:../installing/installing_azure/installing-azure-customizations.adoc[Installing a cluster on Azure with customizations]. You can then add an `arm64` compute machine set to your cluster to create a cluster with multi-architecture compute machines. 
@@ -32,6 +34,4 @@ include::modules/multi-architecture-modify-machine-set-aws.adoc[leveloffset=+2]
 .Additional resources
 * xref:../installing/installing_aws/installing-aws-customizations.adoc#installation-aws-arm-tested-machine-types_installing-aws-customizations[Tested instance types for AWS 64-bit ARM]
 
-include::modules/multi-architecture-upgrade-mirrors.adoc[leveloffset=+1]
-
 include::modules/multi-architecture-import-imagestreams.adoc[leveloffset=+1]