Two parties have competed in recent years to control aspects of the Ventnor narrative: The Ventnor Project Group, led by film maker John Albert and the Chinese Historic Ventnor Group, whose spokesperson is Rawene woman Wong Liu Sheung. Mr Albert is making a documentary; Ms Wong is writing a book.
Ms Wong's group has publicly attacked the divers for "disturbing" the wreck, though Mr Albert insists they approached it with utmost respect.
The event in Wellington was to have centred around presentation to Te Papa of a few items taken from the ship to identify it.
Mr Albert said the day was supposed to have been for the supporters, some of them Chinese, of the non-profit dive project.
Ms Wong confirmed she'd made representations for her group to take part also, but Mr Albert said that would not have been appropriate.
For now, items retrieved from the Ventnor remain in the care of the police.