50% AF Visa Infinite

NAFFL VISA Flex ang meron ako, nag try lang mag tanong kung ma carry over ang naffl if i decide to upgrade it to visa infinite, kaso ang offer lang na meron sila is 50% annual fee for visa infinite, may nakapag try na ba? after a year na charge ka ba talaga ng 50% and napapa-waived padin kaya kahit 50% off na?