Last year I traveled JFK-HKG, then HKG-ICN-TPE-HKG, and HKG-LAX all on CX metal. I was on two seperate reservations, one for US-HKG and another for the Asia segments. On my HKG-ICN segment, the agent at the counter said that I was subject to the baggage weight limits in Asia and I had to pay extra. I was over by 7kg and ended up paying 550 HKD. I told her I had arrived from the US couple days prior and would not budge. On my TPE-HKG segment, the agent in TPE waived the fee because I would be traveling to the US the same day therefore applying the HKG/US weight limits.

Seemed inconsistant and wrote an email to CX customer service and didn't get a clear answer except they said that their agent was correct.