Yes, we were on the Apex TA in May. Flew out of AMS to SOU to get on a Princess cruise. Was at AMS 4 hours ahead of scheduled flight time. Bags would not go thru the automated KLM check in system. Worked with agent she worked for 5 minutes trying to get bags thru the system, eventually the machine accepted and bags never arrived in Southampton. We left on Princess cruise no bags, Bags did show up four days later in Rotterdam. Princess was great gave us toiletries and discount on some clothing in their shop. We quickly bought a few things in Southampton on way to ship. Still waiting for a claim for items we purchased with KLM. Your mileage may vary, although not a lot of fun in AMS long lines and bags not routed. Can happen to anyone normally would bring at least one carry on, although when gone for a month rolled the dice and checked the bags, this time, we lost.
Have been thru AMS at least 25 times, first baggage issue there.
Mirage