(1) If interest coupons are delivered for a bearer bond, then the coupons, unless they contain a stipulation to the contrary, remain in effect even if the main claim lapses or if the duty to pay interest is cancelled or modified.
(2) If such interest coupons are not returned when the main bearer bond is redeemed, then the issuer is entitled to retain the amount they are obliged to pay for the coupons under subsection (1).