I have same problem like Lexor has. Fix updated my 5th challenge quest to 6th one, I received 5 reward points for it and contract for supporting faction during challenge was also updated, but number of points adding to result of this faction challenge stayed at 4. I do not want to bother with contacting support for such petty thing and I doubt it would have effect on result of challenge but honestly, is it so hard to make server side check of all players who are now at 6th quest and contribute to challenge only with 4 points?
This would be much more effective to do by automatic script rather than bothering support by each affected player individually. I have idea how support works in general and they would definitely be "happy" manually solve things case by case, while it could be automatically fixed in batch just like 5th quest progress was fixed few hours ago.