That's a good question - why would we have to attach it again? Why did App Review reject the version? Summary Subscriptions can't be currently re-added in the version UI Subscription status is "waiting for review" Apple rejected the version because it did not include the subscriptions These three statements seem to be in conflict - rejected for not including the subscriptions, yet we can't add the subscriptions (or they are already added...)

To clarify the exact state - the Subscriptions are in "Waiting for Review" state (which implies apple review would review them) but the rejection implies they were not attached to a version (and the UI section is missing to attach them.)