If you have a character that is part of multiple character sets, that use different window layouts with different region sizes, ISBoxer will not be able to sync the resolution in Config.WTF to the window layout when you Export. You can manually edit the Config.WTF for that character (they're all in the WTF folder) to match the others in your team if you want, but just be aware that if you go back to the character's other team it's not going to match again