(1) If upon the granting of an order of liquidation under this chapter or at any time thereafter during the liquidation proceeding, the insurer shall not be clearly solvent, the court shall after such notice and hearing as it deems proper, make an order declaring the insurer to be insolvent. Thereupon, regardless of any prior notice which may have been given to creditors, the commissioner shall notify all persons who may have claims against such insurer and who have not filed proper proofs thereof, to present the same to him or her, at a place specified in such notice, within four months from the date of the entry of such order, or if the commissioner shall certify that it is necessary, within such longer time as the court shall prescribe. The last day for the filing of proofs of claim shall be specified in the notice. Such notice shall be given in a manner determined by the court.

(2) Proofs of claim may be filed subsequent to the date specified, but no such claim shall share in the distribution of the assets until all allowed claims, proofs of which have been filed before said date, have been paid in full with interest.