I don't understand what you mean with "save this folder"?
you mean /usr/share/kernel-power-settings?
don't delete nor change i!. it's part of the package and gets overwritten with every update.
all users configurations go to /home/user/.kernel or /etc/default/kernel-power (if default).

to save the current settings in /home/user/.kernel you run
sudo kernel-config save myconfig