Note about removing disabled setting

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cc: @ggailey777

Author: ggailey777

articles/azure-functions/disable-function.md

@@ -117,7 +117,8 @@ or
 
 In the second example, the function is disabled when there is an app setting that is named IS_DISABLED and is set to `true` or 1.
 
-You can edit the file in the Azure portal or use the **Enable** and **Disable** buttons on the function's **Overview** page. The portal switch works by changing the *function.json* file.
+>[!IMPORTANT]  
+>The portal now uses application settings to disable v1.x functions. When an application setting conflicts with the function.json file, an error can occur. You should remove the `disabled` property from the function.json file to prevent errors. 
 
 
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