Cal. Probate Code § 3708

(a) Within six months after the absentee has returned to the controllable jurisdiction of the military department or civilian agency or department concerned, or within six months after the determination of death of the absentee by the secretary concerned or the head of the department or agency concerned or the delegate of the secretary or head, the former absentee or the personal representative of the deceased absentee may, by motion in the same proceeding, require the person or persons to whom the property of the absentee was set aside to account for the property and the proceeds, if any. The time of return to the controllable jurisdiction of the military department or civilian department or agency concerned or the determination of the time of death of the absentee shall be determined by the court under 37 United States Code, Section 556, or 5 United States Code, Section 5566. An official written report or record of the military department or civilian department or agency that the absentee has returned to its controllable jurisdiction or is deceased shall be received as evidence of that fact. (b) This section does not in any manner derogate the finality and conclusiveness of any order, judgment, or decree previously entered in the proceeding.