NW used to send a tape to CO which posted every Tuesday (I think)...at least that's how it was 2-3 years ago. Call OnePass and ask if NW still posts once a week. If you just miss the weekly tape, it could take 8-10 days to post at CO.

I'm in China, and my outbound legs SFO-NRT-PVG on Sat 10/8 - Sun 10/9 had already posted by Mon 10/10 2 pm CT (Tue 10/11 3 am China time). So either CO posts NW more than once/week (maybe NW and CO have a more direct connection), or the tape runs sometimes Sunday or Monday now.

Hope this helps.