Changes to reward flight with infant
 

Seeking help here since Iberia's phone support is just a complete mess.

I want to know If a flight booked with avios on "Turista" or "Azul" fares and having an infant flying (added to the ticket on the odd separate process through the phone) can be changed to fly another day without any penalty fees.

Well there are fees without the infant so I can't see why it would be free otherwise. Usually 25€ per passenger.