import note

content/rancher/v2.x/en/tasks/clusters/import-cluster/_index.md

@@ -23,3 +23,5 @@ You can import an existing Kubernetes cluster and then manage it using Rancher.
 9. When you finish running the command(s) on your Linux host(s), click **Done**.
 
 {{< result_create-cluster >}}
+
+> *Note:* You can not re-import a cluster that is currently active in a Rancher setup.