A person, whether the person is known, unknown, born, or not born at the time of a proceeding under AS 13.12.530 - 13.12.590, including a person who is represented by another person under AS 13.06.120, is bound by the declaration under AS 13.12.555 even if, by the time of the testator's death, the representing person has died or would no longer be able to represent the person represented in the proceeding under AS 13.12.530 - 13.12.590.