projectFilesBackup folder in android studio project for latest version : <p>If we update the android studio with the latest version and update the plugin as well. A folder named <code>projectFilesBackup</code> created when we open our old android studio project in the latest android studio version.</p>

<p>My Question is why this folder created, why this is for and how long we should keep this folder in our project folder?</p>
