I don't get why a male HA Gourgeist cannot be in a dusk ball. Catch a female HA Pumpkaboo in a dusk ball in a friend safari and breed it with a Ditto and get a male one with HA and dusk ball. Why is this not possible?
I blame the event one here as the press release around it made it sound like the HA was previously unreleased. I had completely forgotten about friend safari existing making it legit.* I should check the size of the Gourgeist though (I'm really bad at this to be honest)
Speaking of friend safaris, is there any way to stop the feature of it forgetting you've fully unlocked certain Safaris when you play on a different 3DS and then switch back (all the trainer portraits vanish until you see them online again, the Pokemon are back to Pokeball symbols and for some Safaris the third one will be locked now...a Ditto safari I've long since not needed was one of these).
My guess it would be down to how it remembers if a safari is unlocked and some of this info got overwritten when I used the other system so the only solution would be have no friends on the other system...which might not be bad as this other 3DS still has the previous owners NNID linked (it has a fair few digital games) and so I'm not taking it online (the owner could still delete it via a Wii U or get Nintendo to revoke it) and so the friends list offers no advantage.
*-For the sake of the example, replace it with the I can believe its powersaves Level Ball, way too perfect IVs (Jolly with 5*31, 0 in SpA; I know that is as likely as 6*31 though...) Darumaka.