Bug (?) DP - AC lowest 免费改票

旅行 航空常旅客
1

ac白板无信用卡，具体情况截图self explanatory

同一个航班，partner lowest economy 改成 partner lowest business

完全没有退改费，仅收取points difference，过程全自助

ac lowest change
ac lowest change2546×1324 272 KB

2

有可能是算 Upgrade，所以不收 Change Fee

TICKET UPGRADE - PASSENGERS UPGRADING TO A BUSINESS CLASS FARE /EXCEPT BASIC/ OR PREMIUM ECONOMY FARES/EXCEPT BASIC / WILL NOT BE ASSESSED THE CHANGE FEE. ALL OTHER RULES MUST BE MET. ANY NONREFUNDABLE AMOUNT REMAINS NONREFUNDABLE.

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3

谢谢，如果真的这样，就非常局限。同routing换航班应该都不行

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