We want to create a flow that runs when a Draft is Marked as Sent, but hasn't actually been sent. We have a problem where some invoices are automatically "Marked as Sent by Mike" when we look in the invoice history, and noticed that these invoices aren't actually being sent to the customer. We have no way to keep an eye on these "Marked as Sent" invoices, and would like to create some sort of report to track them.