[QUOTE=ralfkrippner]I found a CPH-NBO KL I class fare with the following rules:
FARE BASIS CODE
IRTDK
BK CODE
I‡ -
PENALTY
CHANGES ANY TIME CHANGES PERMITTED. NOTE - REROUTING PERMITTED CANCELLATIONS ANY TIME CANCELLATIONS PERMITTED. NOTE - -FOR CANCELLATIONS AFTER DEPARTURE - THE REFUND GIVEN WILL BE THE DIFFERENCE BETWEEN THE RT FARE PAID AND THE APPLICABLE FARE FOR THE JOURNEY FLOWN
Just to confirm the info from ralphkrippner. I travelled out last week on I class CWL-AMS-PEK. I booked on klm.com about two months back. The fare was about 10% cheaper than Z so I double checked the restrictions with KL's UK telephone numbe, which were exactly as he said. (My treble check that it was BIZ was the 30kg luggage allowance on the eticket and then the ability to book a BIZ class seat by 'phone).
As a 5/6 times per annum traveller on this route to China I was glad to see it so cheap - hope it lasts...