(ii) after-discovered property;
(iii) a correction to the value of previously reported property;
(iv) a correction to the amount of previously claimed deductions; or
(v) any other correction to a previously filed return.
(2) (i) The amended return shall be filed within 90 days after the later to occur of the date of the event that caused the increase in the Maryland estate tax liability or the date on which the person required to file an amended Maryland estate tax return learned or reasonably should have learned of the increase in the Maryland estate tax liability.
(ii) On request, each register shall certify to the Comptroller the amount of inheritance tax paid for each decedent for whom an amended Maryland estate tax return is filed with the Comptroller.