Move a Contact from one list to another, once they have registered to an event

Hi, I am sending invitations and promo to a set list but once they register for my event (registration in Clickfunnels), I would like to REMOVE them from the promo list. I currently figured out a Zap to find the Clickfunnels registrants and either add them or update them to be added to a funnel but I don't see a way to update them to be REMOVED from a list. I currently have to manually REMOVE them from the invitation/promo list before the next email is scheduled. Just one more step missing in the automation! SOOO CLOSE! Any ideas? Suggestions?