VMS - What type of Vessel Message updates the ETA/ETD of the leg?

The noon report updates the ETA of the next port, and the port report updates the ETD of the current port.
The Arrive and Depart reports, though they have the ETD and ETA fields, respectively, do not update the ETD/ETA of any Leg. The Arrival and Departure reports do update the actual Arrival and Departure data.