Iowa Code § 516A.4
In the event of payment to any person under the coverage required by this chapter and subject to the terms and conditions of such coverage, the insurer making such payment shall, to the extent thereof, be entitled to the proceeds of any settlement or judgment resulting from the exercise of any rights of recovery of such person against any person or organization legally responsible for the bodily injury for which such payment is made, including the proceeds recoverable from the assets of the insolvent insurer. The person to whom said payment is made under the insolvency protection required by this chapter shall to the extent thereof, be deemed to have waived any right to proceed to enforce such a judgment against the assets of the judgment debtor who was insured by the insolvent insurer whose insolvency resulted in said payment being made, other than assets recovered or recoverable by such judgment debtor from such insolvent insurer.
Iowa Code § 516A.4