IMO not updating the wiki anymore is a seriously bad thing to do : regarding sets but also regarding absolutely everything else. If new players can't know how to play the game, that's really worrysome for the game in a general way. Cause to come back to things like primary and secondary resistance or distance penalty for example, that's not something that players can find out by themselves. So if they weren't here when the changes happened, they just can't know the system was changed and what's written in the wiki is currently wrong.
Knowledge Base only mentions quests and achievements; not even all quests are there, there's no "calendar" neither about them as in the wiki, and there's absolutely nothing in it about how the game works, what sets we can find into the game nor a tool to calculate how much AP/SP/bonuses the sets give according to our level etc. That's a pretty usefull tool to help to know what gear is better than our current best one, and so what gear we should get/buy. Even the rules of the game refer to a link to the wiki (being in the support or the forum homepage), or the help option we can find directly in game : it's a link to the wiki, not to Knowledge Base. The wiki is supposed to be THE official reference to go when we are looking for something regarding the game -the game itself says it so-, and here it's not updated anymore since a rather long time, while the new Knowledge Base is missing lots of important datas, as well as it's pretty badly indexed so difficultly findable.
If everything from the wiki is supposed to be put in KB little by little and only then be better indexed, why not, but in the meantime the wiki should still be updated. Cause seems like the "little by little" may last a looooong time. And with time, all of this can only become more and more penalizing for players.