564. Any section of this Act, including an amendment made by it to another Act, providing that values entered on the assessment roll of a municipal corporation must be multiplied by the factor established for that roll by the Minister under this Act, has effect, for a municipal corporation, from the day that factor is established for its roll made for the fiscal period 1980.
If the provision involves more than one municipal corporation, it has effect only when the factors of all the rolls contemplated in the first paragraph of the interested municipal corporations have been established.