(a) The phrase gross amount of the original claim as used in this subpart Y and as applied to any civil fraud claim described in § 0.45(d), shall mean the amount of single damages involved.

(b) The phrase gross amount of the original claim as used in this subpart Y and as applied to any civil claim brought under section 592 of the Tariff Act of 1930, as amended (see § 0.45(c)), shall mean the actual amount of lost customs duties involved. In nonrevenue loss cases brought under section 592 of the Tariff Act of 1930, as amended, the phrase gross amount of the original claim shall mean the amount demanded in the United States Customs and Border Protection's mitigation decision issued pursuant to 19 U.S.C. 1618 or, if no mitigation decision has been issued, the gross amount of the original claim shall mean twenty percent of the dutiable value of the merchandise.