Thanks for your thoughts guys. Particularly Bbadanov. Can I consider that a primary source?
I have read most of the stuff you get googling the question, and yep, the Hips were exported (under a 'civil' classification) back to Africa and the 67mm and 12.7mm ammo was destroyed by the ADF. It was reported at the time that the An-124 that was delivering the 4 Mils, ordinance and vehicles (?) was escorted into Tyndal by Hornets - but not diverted - the request made by the interim PNG Govn't to divert the arms and Australia provided the preferred place to go. There was no 'or else' stuff.
Nothing though has been reported since the export of the Hips. Since Sandline no longer exists, you might assume they're still at Tyndal. And because they dont constitute any kind of risk to OPSEC or such, you never know who might have seen them.
Or be willing to talk about it.
Thanks.