(2) The permanent maintenance fund is hereby declared to be and shall be held by the corporation as a trust fund, for the purpose of maintaining and preserving the cemetery, including all lots, crypts, niches, plots, and parts thereof. The principal of such fund shall be invested in such securities as are permitted for the investment of trust funds by section 11-2.3 of the estates, powers and trusts law. The income in the form of interest and ordinary dividends therefrom shall be used solely for the maintenance and preservation of the cemetery grounds. In addition, the governing board of the corporation may appropriate for expenditure solely for the maintenance and preservation of the cemetery grounds a portion of the net appreciation, in the fair market value of the principal of the trust, as is prudent under the standard established by article five-A of this chapter, the prudent management of institutional funds act. In the event that a cemetery corporation seeks to appropriate any percentage of its net appreciation in its permanent maintenance fund in accordance with this subparagraph, the cemetery corporation shall provide notice of such proposed appropriation by certified mail to the cemetery board not less than sixty days in advance of such proposed appropriation and shall disclose such appropriation as part of and in addition to their annual reporting requirements as defined in section fifteen hundred eight of this article, setting forth the amount of funds to be appropriated for such expenditure and its effect on the permanent maintenance fund. Such proposed appropriation shall become effective sixty days after receipt of such notice, unless the cemetery board within such sixty-day period notifies the cemetery corporation that the board objects to the proposed appropriation. Notwithstanding the foregoing provisions of this subparagraph, all principal of the permanent maintenance fund shall remain inviolate, except that, upon application to the supreme court in a district where a portion of the cemetery grounds is located, the court may make an order permitting the principal or a part thereof to be used for the purpose of current maintenance and preservation of the cemetery or otherwise. Such application may be made by the cemetery board on notice to the corporation or by the corporation on notice to the cemetery board. Unless the cemetery can clearly demonstrate that it lacks sufficient future revenue to make repayment, any such allowance from the permanent maintenance fund shall be in the form of a loan, and the court shall determine the method for repayment of such a loan by the cemetery to the fund. If the cemetery clearly demonstrates it lacks sufficient future revenue to make repayment such allowance from the permanent maintenance fund shall be in the form of a grant that the cemetery is not required to repay into its permanent maintenance fund. A cemetery, including a surviving cemetery following a merger or consolidated cemetery following a consolidation, may seek a modification of the method of repayment, or conversion of a loan to a grant, if the cemetery can clearly demonstrate that the cemetery merged or consolidated into the surviving cemetery will not produce sufficient future revenue to make repayment under the existing loan.