Originally Posted by
JY1024
And yes, if you clear your international segment upgrade, you'll have all the perqs that come with a business ticket - priority check-in, luggage allowance, lounge access, etc.

Just for added clarity, you need to have cleared before you check-in for the added benefits like the luggage allowance, priority check-in etc. to come into play.
You will not get a refund of baggage charges incurred for example, if your upgrade doesn't clear until the departure gate.