On several occasions I selected one of my profiles with all the fields completed as a Reference Rig but when I profiled the new rig I got random Rig information that was driving me mad. I think I finally figured it out while doing some profiling yesterday. I was turning the Chicken Head knob in stages from Browse to Performance then Profile. I think I was accidentally loading the first rig in Performance mode as my reference rig - DOH!!!
Moral of the story when you have loaded the reference rig in Browse mode make sure you turn it straight to Profile - go straight to jail do not pass go do not collect £200