(1) If the spouse declared dead is still alive, then notwithstanding section 1319, their former spouse may petition for the annulment of the new marriage, unless they knew at conclusion of the marriage that the spouse declared dead was still alive at the date of the declaration of death. The annulment may be petitioned for only within one year. The period begins on the date on which the spouse of the former marriage obtained knowledge that the spouse declared dead is still alive. Section 1317 (1) sentence 3 and subsection (2) applies accordingly.
(2) The consequences of the annulment are governed by section 1318 accordingly.