The commissioner of insurance shall review any plan proposed pursuant to Kan. Stat. Ann. § 40-2111, as soon as reasonably possible after the same is filed, in order to determine whether it meets the requirements set forth in said Kan. Stat. Ann. § 40-2111; and as soon as reasonably possible after the plan has been filed, the commissioner shall in writing approve or disapprove the same: Provided, That any plan shall be deemed approved unless disapproved within forty-five (45) days after its submission, but subsequent to any plan receiving approval in such manner, the commissioner may disapprove said plan if it does not meet the requirements set forth in Kan. Stat. Ann. § 40-2111, but only after: (1) A hearing has been held upon not less than ten (10) days’ written notice to every insurer and rating organization which would be affected by such ruling, specifying the matter to be considered at such hearing; and (2) the commissioner has issued an order specifying in what respect he finds that such plan fails to meet such requirements, and stating when, within a reasonable period thereafter, such plan shall be deemed no longer effective. Such order shall not affect any assignment made or any policy issued or made prior to the expiration of the period set forth in said order, and it shall require that amendments of such plan or plans shall be prepared, filed and reviewed in the same manner as herein provided with respect to the original plan or plans.