The sales and use tax imposed under this section shall be retroactive to 12:01 o'clock a.m., January 1, 1990. The provisions of the predecessor Sales and Use Tax Ordinance of the City which is repealed hereby shall be deemed to have continued effective until 12:00 o'clock midnight, December 30, 1989. The provisions of this Ordinance which are not in conflict with the former Ordinance shall be deemed to be a continuation thereof and any rights, duties and obligations arising thereunder shall not in any way be deemed abrogated or terminated.