Hi Josh – Both Registration Approved and Registration Pending Payment messages are set to only go to the Primary Registrant. All attendees that were moved required an additional payment and should have received the Pending Payment notice as well as the ticket cancellation notice. One of the registrations had only one attendee in the initial order but did have a tickets to two separate functions within the event (main event and workshop A). The other registration had two attendees and each attendee had tickets to two separate functions within the event (main event and workshop A). All were moved from Workshop A to Workshop B. Once I manually sent the Pending Payment emails and the balances were paid, the Registration Approved message went out automatically.