Tbh ive never really restored a backup cause of liability to screw up the upgrade process from 8 to 10 but does it re-config the start menu too?
Yea I usually avoid restoring as well. But yes, I believe it does keep your start configuration. On my last restore it did, at least. Regardless of whether or not you restore, just make sure you take screenshots of your start screen and app list, and that you save the screenshot on your sd card or onedrive