Adding Extra Leg on Ticketed Award Booking
 

I currently have an award booking in J from HKG-SFO on CX892 and would like to add a leg from KIX-HKG prior to the aforementioned leg. I see availability on AsiaMiles for 85,000 miles total whereas I redeemed 70,000 for my original booking. I have MR points I can transfer over to cover the cost. What would be the best way to add the additional leg?

Any chance to call them and ask since you already have a booking?

You will need to pay a 100USD(?) reissue fee in addition to the additional miles charged. Just give asiamiles a call and they should be able to sort it out for you (provided that there are no married segment non-sense)

Just saying, you can also redeem a new ticket from KIX-HKG using asiamiles for 25k in J or 10k in Y. If you give them a call, they can put the new ticket in the same booking reference so all bags can be checked through, so depending your valuation of miles this is also possible.

Yeah I was thinking would OP want to cross necessarily from Long-Type 2 into Ultra-Long

Maybe only if KIX-HKG was Business

Economy Standard reissue: 30--->42k AM
Business Standard reissue: 70-->85k AM
+US$100/10,000AM fee

Stand-alone Economy Standard: 10k AM
Stand-alone Business Standard: 25k AM

Because both sectors are CX, CX will check through (written policy) and protect (unwritten policy) as if one booking anyway.