Quote Originally Posted by Pixiehawk View Post
Had you registered a favored aetheryte? If so, did it stay after you deleted app?
I don't think it really has any way to check. It appears to be an account-wide (all service account, all character) flag that gets set as soon as you link any character to the app for the first time. Then all your characters can register an additional favorite aetheryte destination from that point on. I tried deleting the app, and not only were my existing favorites still there, but I could create a new fourth favorite on another character.