Originally Posted by
mmogdan
I checked in the lounge in AMS and also at the gate in AMS and was told the bag was in AMS and would be loaded onto the flight to LIS.
It's pointless to ask in the lounge; the place to do so - as it appears you did - is at the gate.
Did you show the baggage receipt and have it scanned, or have the gate agent type in the locator? And did you explain that this was a bag that KLM should not be "expecting"?
If just asked in a casual manner - without explaining that this is a bag that is not interlined in the "normal" manner, and therefore without KLM actively "seeking" the bag - the agent may merely have thought that you were being over-cautious about a "normal" interlined bag.