d) You agree, as a Maxis prepaid customer, upon Service
Migration to Maxis postpaid Service(s), you have the option of
continuing with the value added services you previously subscribed to as
a Maxis prepaid customer, if available under
the Maxis postpaid Service(s).
The airtime balance reflected in your prepaid Account shall be
transferred as credit balance into your newly registered Maxis postpaid
account and reflected in your bill in accordance with the billing cycle. This
is subject to your prepaid account not having expired;