Blender Addon save Hotkey Preferences I have for my Blender 2.8 addon 2 keyboard shortcuts that I add to the AddonPreferences:



In the init file I use this code to draw them:

class FC_AddonPreferences(AddonPreferences):
    bl_idname = __name__

    def draw(self, context):
        layout = self.layout

        col = layout.column()
        kc = bpy.context.window_manager.keyconfigs.addon
        for km, kmi in addon_keymaps:
            km = km.active()
            kmi.show_expanded = False
            col.context_pointer_set("keymap", km)
            rna_keymap_ui.draw_kmi([], kc, km, kmi, col, 0)


And here is how I add them

addon_keymaps = []

def register():
   # add keymap entry
   kcfg = bpy.context.window_manager.keyconfigs.addon
   if kcfg:
       km = kcfg.keymaps.new(name='3D View', space_type='VIEW_3D')

       kmi = km.keymap_items.new("object.fc_immediate_mode_op", 'P', 'PRESS', shift=True, ctrl=True)

       kmi_mnu = km.keymap_items.new("wm.call_menu", "Q", "PRESS", shift=True)
       kmi_mnu.properties.name = FC_Main_Menu.bl_idname
       kmi_mnu.active = True

       addon_keymaps.append((km, kmi))
       addon_keymaps.append((km, kmi_mnu))


This works, but when I save the settings and reopen Blender the changes that the user made are gone and reset to default.

What am I missing? Thx!
I have a similar issue since Blender 2.8 for which I opened an issue: https://developer.blender.org/T59113