[Help] Saving the custom preferences xml in apk itself.

guys Am using xposed in my android Jb Phone.
Am currently using
1. Gravitybox
2. perfectcolorbar
3. installeropt

I wana save their preferences & make a modded apk so that I can push them to the system & even factory reset cannot affect it.

I can give you preferences.xml from above apps data.

Any one please help me in this regard.