Got a DONE3 fare issued by BA for 2629USD (+1115USD taxes) ex-CAI. They didn't want to hold it, so does anyone know what is 5% cancelation penalty calculated from- before or after taxes. Need to optimize the itinerary so might need to cancel and rebook. The ticket has 13 segments, including several A legs on QR in Middle East and QR DOH-JFK and CX on JFK-CAI among others.I was surprised BA went ahead and ticketed it - very different from Star where you need to email LH folks.