You can edit scope of most alert rule types

Author: AbbyMSFT

articles/azure-monitor/alerts/alerts-manage-alert-rules.md

@@ -16,7 +16,13 @@ Manage your alert rules in the Azure portal, or using the CLI or PowerShell.
 1. In the [portal](https://portal.azure.com/), select **Monitor**, then **Alerts**.
 1. From the top command bar, select **Alert rules**. You'll see all of your alert rules across subscriptions. You can filter the list of rules using the available filters: **Resource group**, **Resource type**, **Resource** and **Signal type**.
 1. Select the alert rule that you want to edit. You can select multiple alert rules and enable or disable them. Multi-selecting rules can be useful when you want to perform maintenance on specific resources.
-1. Edit any of the fields in the following sections. You can't edit the **Alert Rule Name**, **Scope**, or **Signal type** of an existing alert rule.
+1. Edit any of the fields in the following sections. You can't edit the **Alert Rule Name**, or the **Signal type** of an existing alert rule.
+    - **Scope**
+
+        Note that you can't change the scope for these types of rules:
+        - Log alert rules
+        - Metric alert rules that monitor a custom metric
+        - Smart detection alert rules
     - **Condition**. Learn more about conditions for [metric alert rules](./alerts-create-new-alert-rule.md?tabs=metric#tabpanel_1_metric), [log alert rules](./alerts-create-new-alert-rule.md?tabs=log#tabpanel_1_log), and [activity log alert rules](./alerts-create-new-alert-rule.md?tabs=activity-log#tabpanel_1_activity-log)
     - **Actions**
     - **Alert rule details**