I am doing the 100k in six different programs (AA, BA, CP, CX, IB, AY). I flew IB on a six segment trip from DFW-ORD-MAD-ORY (r/t) and I had a huge confusion in posting when I gave each segment separately. In this case I have to call each program separately to un-post the miles from the wrong accounts so when I fax my boarding passes/receipts to the right carrier I can get proper accounting. I'd complain if I wasn't getting 600k in addition to my flight miles.

Good luck to you all! Happy flying.