probably nothing. It is still inside your apk/installation
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The programmatical handling of shortcuts in Android is a well known, widely used but not officially supported Android feature. It seems to work on the default launcher
That's what I mean, but I would like it if it replaced my existing app icon rather than create a separate shortcut. Maybe if I could hide the other one it would be better , otherwise there would be no point just to have 2 app shortcuts