The idea was to make up for the down time due to update but it actually created more issues than if they'd left it alone. Scraps contests are often tight...especially at the end with players stretching to either creep up just enough to hit the next percent or going just a bit more to hang on to their current rank. This is often extra close between the 1% to 10% rankings. Essentially this contest "ended" then "started again" which led to many players losing a rank bracket and not even realizing it until it was too late.
Any time an update rolls during a contest (or any update that will cause down time) Gree needs to send an in game mail at least 2-3 days in advance letting players know what's coming and how it may impact contest strategy and/or game play. Add a link to forum for additional details. It is appreciated that game mails are happening more often.