All City ordinances, resolutions, orders and regulations which are in force immediately preceding the effective date of this Charter shall continue in full force and effect to the extent that they are not in conflict with this Charter, and they shall so remain in effect until repealed or modified. To the extent that they are inconsistent, in conflict or interfere with the effective operation of this Charter, such ordinances, resolutions, orders and regulations shall be of no further force or effect after 60 days from the effective date of this Charter, unless sooner modified or repealed by competent authority.