I have my DOH-CDG inbound leg upgrade approved, using Qmiles.
However after my outbound legs I will reach gold and have 40 Qredits that would allow me to upgrade not one but both legs of my inbound trip (CGK-DOH-CDG).
Once arrived in CGK and banking those Qcredits, can I cancel my Qmiles DOH-CDG upgrade (I know I loose 25 USD) and right after that trying the CGK-CDG upgrade with Qcredits?
I have 10 days in CGK if that matters.