I found documentation that states that edge favorites are stored here
Edge, the Favorites folder is now located at %UserProfile%\AppData\Local\Packages\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\AC\MicrosoftEdge\User\Default\Favorites.
whereas ie favorites are stored under the user profile
You might want to consider having an option to allow user to select which favorites are displayed on the start menu. I assume I will start using edge so I would want
my edge favorites to be on the start menu (not IE). However if I go back to IE, It would be nice to switch it back.