A. The absent person's domicile at the time of his absence, his ownership of property in this state, and all other facts necessary to establish the jurisdiction of the court may be evidenced by affidavits submitted with the petition of the person seeking to be appointed curator for the absent person. All other facts necessary to establish the relationship with the absent person may be evidenced either by official certificates or by affidavits.
B. The affidavits shall be executed by two persons having knowledge of the facts to which they have sworn, and shall be filed in the record of the proceeding.
C. The court may require further proof of any fact sworn to in the affidavit by the introduction of evidence as in ordinary cases.
D. No fact that is an issue in a contradictory proceeding to appoint a curator for an absent person may be proved by affidavit. Issues of fact shall be determined on the trial thereof only by evidence introduced as in ordinary cases.