Thanks for the update.
Anyway yes, we cannot change the IATA’s rate on Mawb. I suggest to check with whom it concern in BKK’s apt / authority, how to do it as well. Because from our site we can give you suggestions, even if I don’t think there are many of those, but it depends how BKK authority accept it.
FYI, it means that now we could issue also Hawb as agreed in case ?