you talk about change in config.cfg file? This file is stored in backup!! Isn't possible you restored it from backup?
you are right, now after unzip i see config.cfg is in backup.zip included, but it isn´t restored.
so e.g.
gui_point_screen_tabs_order=14|1|11|12|13|16
is stored in backup
i change config.cfg on device to
gui_point_screen_tabs_order=
and save it, restart device and restore complete including restart of device, but these values are not restored