title: In UWP, where should I save user data?
body: <p>I made an UWP app for Microsoft Store. However, user data automatically saved in the LocalState folder will be deleted every time the app is updated. I want the data to be retained after every updating, so I'm trying to suggest the users to save their data by themselves in the Document folder or somewhere to avoid their data deleted, but I don't want to bother them. Where should I save user data?</p>
  <p>The roaming folder will be unable to use in future and I don't want to use Azure because of its fee.</p>