(3) If:
(a) a refund is made by the Commonwealth under section 18 of the Primary Industries Levies and Charges Collection Act 1991 in respect of an amount; and
(b) the amount has been paid or overpaid to the Commonwealth by way of wine export charge;
the Authority must pay to the Commonwealth an amount equal to the amount of the refund.
(4) If:
(a) a refund is made by the Commonwealth under section 18 of the Primary Industries Levies and Charges Collection Act 1991 in respect of an amount; and
(b) the amount has been paid or overpaid to the Commonwealth by way of the general component of wine grapes levy;
the Authority must pay to the Commonwealth an amount equal to the amount of the refund.
(5) If:
(a) a refund is made by the Commonwealth under section 18 of the Primary Industries Levies and Charges Collection Act 1991 in respect of an amount; and
(b) the amount has been paid or overpaid to the Commonwealth by way of the research component of wine grapes levy;
the Authority must pay to the Commonwealth an amount equal to the amount of the refund.
(6) If:
(a) a refund is made by the Commonwealth under section 18 of the Primary Industries Levies and Charges Collection Act 1991 in respect of an amount; and
(b) the amount has been paid or overpaid to the Commonwealth by way of grapes research levy;
the Authority must pay to the Commonwealth an amount equal to the amount of the refund.