A qualified disposition shall be subject to § 3572 of this title notwithstanding a transferor's retention of any or all of the powers and rights described in § 3570(11)b. of this title and the transferor's service as investment adviser pursuant to § 3570(8)d. of this title. The transferor shall have only such powers and rights as are conferred by the trust instrument. Except as permitted by §§ 3570(8)d. and 3570(11)b. of this title, a transferor shall have no rights or authority with respect to the property that is the subject of a qualified disposition or the income therefrom, and any agreement or understanding purporting to grant or permit the retention of any greater rights or authority shall be void.