The departure flow handles two cases automatically.
- Clients the departing member owned are routed through the departure split UI (stays-with-firm vs. takes-with-them, decided per client by the admin and member). Any collaborators previously on those clients keep their access after the new owner is set.
- Clients the departing member was a collaborator on (i.e. someone else’s file that sat on their list) automatically have their share stripped when the departure is confirmed. Each affected owner gets a notification: “[Departing user] left the firm; their collaborator access to [Client] has been removed.” Leaving the firm is what ends their access to the file; the share only decided whose list it sat on.
You don’t need to manually unshare those clients before kicking off the departure: the cleanup happens as part of Confirm Departure.