7This Part of this Schedule shall have effect, and be deemed always to have had effect, in relation to deaths occurring on or after the third day of September, nineteen hundred and thirty-nine :
Provided that, where before the passing of this Act a trustee or executor has distributed any property, his maximum liability for duty and interest remaining unpaid shall not exceed the amount which can be raised from, or from the proceeds of, property in his hands at the passing of this Act or coming into his hands thereafter, being in either case property which he received as trustee or executor.