NPDL are swapping around vessels on their schedules.
Capitaine Kupe is replacing Southern Moana calling Auckland, Pago Pago and Apia. Nukualofa has been dropped from the schedule after January.
Southern Pearl is coming back to replace Capitaine Magellan on the Auckland, Fiji, Vanuatu schedule. Capitaine Magellan will sail out of Fiji.
Southern Moana is replacing Southern Trader on the Tahiti schedule. Southern Trader may be returning to her owners.
There does not appear to be a service to Tonga, so don't know what is happening there.