A couple weekends ago, I flew EDI-CDG-SIN on AF 5053/256. My WP number showed up on the first BP printed (EDI-CDG) but not the second (CDG-SIN). Both segments showed up, were "Q" for a week, then got credited.

Last weekend, I did the SIN-CDG-EDI return on AF 257/5050. Again, my WP number printed on the first BP (SIN-CDG) but not the second (CDG-EDI). The first segment (flown overnight 17 Feb) has shown up and is "Q" but the second segment (flown the morning of 18 Feb) hasn't shown up at all.

Fortunately, I kept the BP stubs, but I'm wondering how something like this even happens.