iOS: Tracking the paid users while converting paid iOS application to free with in-app purchases
<p>We have a paid iOS application in the AppStore currently. We are planning to convert it to a free application with in-app purchases. We would want to make the in-app purchases free to the users who have already paid for the application in the previous version. I think this can be done via App Receipt Validation. But will the receipt get updated once the application is converted from paid to free and will the purchase details get lost?</p>