Hey LexManos, thanks for replying! I understand if you think this shouldn't be added, I agree modders have the tools to implement this for their mods already. The thing is, if a modder doesn't implement this for their mod there is no way for a player to have separate configs for separate worlds. If the default forge behavior changed to having configs be saved for each world players would not have to worry about modders not implementing this feature. If I was a better / more confident programmer I would whip something up myself, and I understand that this is by no means a high priority addition to Forge, I just want to put the idea out there.