I am writing a queue_log app because the one we use now is horrible, and I came across something interesting.
For the actions COMPLETECALLER and COMPLETEAGENT, the original queue position of the caller is supposed to be recorded, as per this page:
However, this is not happening. The holdtime and calltime are being recorded, but not the original position. While this is not an earth-shattering problem, I figured it might merit some attention at some point.