It might be a little early to ask this question, but I'm struggling to understand what delta means by it's "006" flight code for MQD's. In the past I would use KLM.com to book my intra-europe flying, and just enter my Delta FF number. Now I'm really confused what I would do.

Case in point: say I wanted to fly from LHR to FCO. Using Delta's own website, I get all KL flight numbers (no "006" to be seen) for flights operated by KL or AZ. I also get a ticket quoted in British Pounds. Is this an MQD ticket? Is Delta converting pounds to dollars for me to get an MQD amount?

The old system was so much simpler. Can anybody point me in the right direction here?