The June 3 return date from Australia is going to be the teething one to say the least. That is the official cut off date when CP leaves Qantas' programme and vice versa. So you may NOT get credit for that flight sector.

All in all, QANTAS staff has nenevr in my opinion come round in economy class anyway to greet other OW top tier members. CX seem to be the only one that does.

Note that too, your lounge access will disappear on June 3rd as well. Unless y ou hold another OW card.