How to change non-consumable to auto-renewable subscriptions and keep old user?

Question

I\'ve had in-app purchase feature with non-consumable pricing in Apple Store. And the app has pricing to use it.

How to change non-consumable to auto-renewable subsc

Answer 1

No you can't change it, just make sure in your App, you use
[[SKPaymentQueue defaultQueue]restoreCompletedTransactions];

Restore old purchase and check if you find that the user has purchased the non-consumable product (old users), restore the product for free. If user has not purchased that product before (new users), ask them to purchase the new auto-renewable subscriptions.