Config files for mime settings

I have an Aweseome-wm + xfce system. Where does xfce4-mime-settings stores its values? In particular as regards default apps. The GUI values are different for me from those on ~/.config/mimeapps.list and they have precedence over the latter. Some defaults programs are stored in: ~/.config/xfce4/helpers.rc /etc/xdg/xfce4/helpers.rc But that does not include PDF types.