The provisions of Article 201 (Tax Withheld from Retirement Income) of the new Act as deemed to be replaced pursuant to Article 3, paragraph (1) of the Supplementary Provisions, and Appended Table 6 of the Supplementary Provisions and the annexed table to Appended Table 8 of the new Act, apply to severance pay or other such compensation as prescribed in Article 199 (Obligation to Withhold Taxes from Retirement Income) of the new Act (hereinafter referred to as "severance pay or other such compensation") that is payable during 1970 and is paid on or after the effective date, and the provisions then in force continue to govern severance pay or other such compensation payable during that year that was paid before that date.