Thanks Tony,

Currently when a fulfiller adds an additional comment to the RITM ticket a notification is sent to the caller and the assigned to.  You can see a copy of the email in the activity stream of the RITM ticket.  

When the caller responds via email I would like the email received to be included in the activity log on the sc_task ticket as well.  Currently you can only see it in the RITM ticket.

The inbound action that is called "Update request item" is OOB and includes the following:

I have tried both suggestions on this thread but I am not seeing the email post in the activity feed of the related sc_task yet in comments or work notes.