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. Validation.- Notwithstanding anything contained in the Kerala General Sales Tax Act, 1963, if any registered dealer has collected any sum purporting to be additional sales tax under section 5D during the period from the 1
st day of April, 2003 to the date of coming into force of the Kerala General Sales Tax (Third Amendment) Act,2003, the amount so collected shall be deemed to have been validly collected under the provisions of the Kerala General Sales Tax Act, 1963, as amended by this Act and accordingly the dealer shall be liable to remit the amount to the Government on or before the 31
st day of July,2003, by declaring it in the monthly return in which case the penal provision of the said Act shall not apply.