We have a CRM view called "Prospects" that synchronizes to Campaigns. When a Prospect makes a purchase, we update a field to "Contracted" and this contact then disappears from the CRM Prospects view.

However, he does not disappear from the Prospects list in Campaigns and he continue to get sales e-mails, even though he is already a customer. How we do we remove a subscriber who is no longer a member of a CRM view automatically?