Ok, I was actually doing that, and the changes would stay there on the screen, but wouldn't reflect in the mail headers. there was more than enough time for it to reflect maybe 1 day or 2.
now that i started playing with it by adding more spam filter users it now starts to show in the headers.
this problem was also happening in my ftp-users, where it was not reflecting the changes, but for some reason out of nowhere the changes that i started setting are now reflecting in the system operation.
Just wanted to update.