Presumably you could filter out your prepaid data from the reports you’re running, based on date, payment method or some other identifier.
But on the flip side, if decided that you wanted to know how much you’d spent on x (where is x something that you have used your card to purchase consistently) ‘this year’ (or some other criteria) for example, you’d find yourself unable to do so.
So I’m struggling to see the upside there or the impact.