Hi. I don't know whether what I'm about to write has already been written, but the search function seems broken and I'm not supposed to read 39 or even 236 pages of posts, am I? So please forgive me if it's something that you've already read and just ignore me (or, even best, please show me where it has been discussed). Thanks!
So, I've noticed that in World Cup knockout stages a couple of odd things happen: random non-South African stadiums are used (I know that this has been noticed before) and computer opponents don't stick to default starting line-ups anymore (it seems they select player by form). I.e. it's like different settings are used, like it's a different tournament (indeed after the end of the group stage the video that you see at the beginning of a new tournament starts...).
Now, I'm probably suggesting something stupid, since I know nothing about PES editing, but is it possible that you (the great and mighty editors) should find and change the settings for the knockout stage as you've done for the group stage?
(BTW, I know that the WC has ended more than one month ago, but I guess that a fix would be welcome anyway. And in any case my suggestion can hopefully be useful in general.)