There’s 2x FlyByWire folders… The one inside the community folder is the core mod. Used for the aircraft files, etc etc.
But the mod itself will create another FlyByWire folder, outside of the community folder, used to store settings like the throttle configuration, and the logs.
What’s your specific issue that you’re experiencing with the throttle configuration? There’s no way we can revert back to the old version of calibration now. The only thing you can do is to recalibrate your throttle again with the new method. The values may be different, but as I said, as long as you know what the calibration does and how it “interprets” the input coming from your controls and into the aircraft. You can just recalibrate it using different values, and you’ll end up back to the same way as it was before.