What all things will affect in an iOS App, if it is changed to Unlisted app in the App Store?

We have an iOS application which is basically for an Organisation usage. So Apple suggests me to change my app type to unlisted app. But I need some clarification on the unlisted type app.

Following are my questions:

  1. Will it affect the current installed users?
  2. Will the user receive new version release notification of my app?
  3. Can they update new version without remembering app link?
  4. Will the app link be same as current even if it is changed to unlisted?
What all things will affect in an iOS App, if it is changed to Unlisted app in the App Store?
 
 
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