I too have this issue.
If you want, I'd be willing to send you my configuration file even. Though I'd have to remove my PPPoE password beforehand just in case.
If I set all my PF/VS settings with SS on, save, reboot, then disable SS, my settings will stay even after reboots. However should I want to add anything, it's impossible to get the additions to save after a reboot with SS disabled.