(1) The trust agreement shall provide, in substance, that no withdrawals of trusteed assets shall be made by the insurer or permitted by the trustee or trustees without the written authorization or approval of the office in advance thereof, except as follows:
(a) Any or all income, earnings, dividends, or interest accumulations of the trusteed assets may be paid over to the United States manager of the insurer upon request of the insurer or the manager.
(b) For substitution, coincidentally with such withdrawal, of other securities or assets of value at least equal in amount to those being withdrawn, if such substituted securities or assets are likewise such as are eligible for investment of the funds of domestic insurers under part II of chapter 625; and if such withdrawal is requested in writing by the insurer’s United States manager pursuant to general or specific written authority previously given or delegated by the insurer’s board of directors or other similar governing body, and a copy of such authority has been filed with the trustee or trustees.
(c) For the purpose of making deposits required by law in any state in which the insurer is or thereafter becomes an authorized insurer, for the protection of the insurer’s policyholders or policyholders and creditors in such state or in the United States, if such withdrawal does not reduce the insurer’s deposit in this state to an amount less than the minimum deposit required under s. 624.412. The trustee or trustees shall transfer any assets so withdrawn, and in the amount so required to be deposited in the other state, directly to the depository required to receive such deposit in such other state, as certified in writing by the public official having supervision of insurance in the other state.
(d) For the purpose of transferring the trusteed assets to an official liquidator, conservator, or rehabilitator pursuant to the order of a court of competent jurisdiction.
(2) The office shall so authorize or approve withdrawal of only such assets as are in excess of the amount of assets required to be so held in trust under s. 630.021, or as may otherwise be consistent with the provisions of this chapter.
(3) If at any time the insurer becomes insolvent, or if its assets held in the United States are less in amount than as required under s. 624.412(1), upon determination thereof the office shall in writing order the trustee to suspend the right of the insurer or any other person to withdraw assets as otherwise authorized under paragraphs (1)(a), (b), and (c); and the trustee shall comply with such order until the further order of the office.
(4) In the case of withdrawal of trusteed assets deposited in another state in which the insurer is authorized to do business, it shall be sufficient if the trust agreement requires similar written approval of the insurance supervisory official of such state in lieu of any required approval of the office. In all such cases, the insurer shall notify the office in writing of the nature and extent of such withdrawal.