Article 63 (Special Provisions on Necessary Expenses In the Event of a Business Closure) and Article 64 (Special Provisions on Calculation of Income If Payment for Transferred Assets Becomes Uncollectible) and Article 152 (Special Provisions on Requests for Reassessment If Income in Each Class Changes) (including as applied mutatis mutandis pursuant to Article 167 (Application Mutatis Mutandis to Nonresidents) of the new Act) of the new Act apply where the facts prescribed in those provisions arise on or after the effective date, and the provisions then in force continue to govern where such facts arose before that date.