I think it would be better to bring Putra Mas to Melbourne already now. Permai could then leave after Tricia's death. Perhaps it would be Sydney.
While I agree bringing Putra Mas to Melbourne Zoo is the next obvious move, I think they should delay it another three years until Man Jai is over eight years old. Right now at five and a half years, he’s in the critical risk zone for catching EEHV and I’d be wary of introducing any new elephants into the herd.
Some of the birth intervals of the cows at Melbourne are getting ridiculous so as a priority, I’d say do AI with Kulab (last gave birth 2010) and then possibly Dokoon (last gave birth 2013); while Num Oi (last gave birth 2016) and Mali (born 2010) could wait to be bred naturally in 2022 without any major issues.
I don’t think Permai should go to Sydney as she’d be living with a matriarch who’s younger than her; and space at Taronga Zoo is limited. I think Auckland Zoo is the best place for her. She’d fit in well with their two females, and it’s doubtful their third elephant they’ve been trying to source for years is ever gonna come.