Originally Posted by xfisgsm

#64 has the AA fare rules.

REPRICE USING FARES IN EFFECT WHEN TKT WAS ISSUED PROVIDED ALL OF THE FOLLOWING CONDITIONS ARE MET- 1. NO CHANGE TO 1ST FARE COMPONENT 2. WHEN NO INTL COUPONS REMAIN - ALL NEW TRAVEL MUST BE DOMESTIC 3. AA/JL/QF ANY FARE TYPE EXCEPT EOU/ERU ARE USED 4. ALL RULE AND BOOKING CODE PROVISIONS ARE MET 5. ADV RES IS MEASURED FROM ORIGINAL TKT DATE TO DEPARTURE OF PRICING UNIT

It seems like you won't be able to reprice using historical fares based on my interpretation of that block. At most you would be able to reprice the return segments once HKG-LAX is flown, although I'm not sure if AA treats Canada as INTL.