I'm able to appy custom moving averages, but they don't reappear when I start a new session. Am I missing a SAVE button or something?

That should automatically save them when you click apply. I see my custom moving averages on my charts...perhaps try contacting MS support regarding it; they should be able to help you.

Saving settings between sessions is usually controlled by a browser security or privacy setting. Please contact our technical support team so we verify which browser you are using and troubleshoot your issue: reachus@marketsmith.com