For those asking: You can indeed face previous opponents again, if your scores are similar. I cannot change the matchups after the round starts, with the exception of inactive users.
Quite Quiet - I was running late, and that's how the script gave it to me. When I find time I might try and edit the matchups.
Lasagne21 - OK, I'll update the score, but I'll leave the matchups as it is.
Tomahawk9 - Sorry. You'll be given priority when a person needs to be subbed out.
Corkscrew - I'll update the scores, but I'm leaving the matchups where they are.
E-ShenLong - Activity is given to people with opponents that have not logged on in five or more days, give or take.
Chieliee - I'll update the scores, but I'm leaving the matchups where they are.
Nozzle I will fix that as soon as a BW NU singup happens, or an inactive user who signed up for BW NU messages me via pm.