Originally Posted by
kyanar
Try that same search with an origin of SYD or BNE - suddenly you'll find that NZ thinks it's an invalid routing, and that destination cannot be served. It will, however, offer routings where it can reach them using solely *A metal (e.g. Edmonton CA). Even a multistop search cannot be coaxed into offering it, leading me to believe it's likely not offered to the AU POS for regulatory reasons.
Probably terms in their agreement with BA on AU-European routes, BA used to serve SYD themselves.