I meant that this routing maybe be refused by a CO agent because you use AKL three times as a transit.Have you been successful in booking NRT-AKL-NAN-AKL-PPT-AKL-NRT on continental.com?
This one(NAN-AKL-SIN-PVG-KIX-AKL-PPT) is not a problem because you use AKL as a transit twice. I'm just asking,i'm no expert.