It is done and appears not to function retroactively as the points didn't change at all, nor did the standings.
I have a suspicion it will amount to a relatively meaningless change. Point values will end up being higher, but you'll be penalized at the same relative rate should your player be on the minus side more often than not. I think all it's going to mean in the end is if you finish now with 900 points, you'd maybe have finished with 850 previously, but relative to anyone else it won't change.