After over 5 years as a *GOLD FF (AC Super Elite) I'm considering returning to Oneworld (I was Exec Platinum on CP before AC took it over). This is in part due to the dramatic increases in *Alliance RTW fares ex Asia making them uncompetitive with Oneworld. Anyway I'm trying to learn how the xONEx fares work. The Oneworld planner is quite good and I was able to get the route I wanted. The online tool stated that the routing was valid and available in D, however it would not show a price on the booking page - just a "database error". I called Cx booking and after reviewing it overnight they said it was an invalid routing due to "back-tracking".

The routing is
ICN xHKG PER, PER-SYD, SYD xHKG YVR, YVR x JFK YYZ, YYZ xJFK SJU, SJU xJFK YYZ, YYZ-LHR, LHR xHKG ICN

The part they had trouble with was SYD to YVR on CX connecting in HKG. While I agree this would appear to be backtracking the rules from expertflyer state

"E. ONLY ONE INTERCONTINENTAL DEPARTURE AND ONE INTERCONTINENTAL ARRIVAL PERMITTED IN EACH CONTINENT EXCEPT AS FOLLOWS -
1. TWO PERMITTED IN NORTH AMERICA WHEN ONE IS A TRANSFER WITHOUT STOPOVER.
2. TWO PERMITTED IN ASIA WHEN ONE IS A TRANSFER WITHOUT STOPOVER OR ON DIRECT SINGLE PLANE SERVICE BETWEEN SOUTHWEST PACIFIC AND EUROPE."

I'm not sure if I'm missing something, but since SYD xHKG YVR does not involve a stopover shouldn't this be allowed - also how accurate is the planner tool whenit comes to fare rules.

Thanks very much for any help you can offer