46. If, following delegation by agreement, a power is exercised by each reconstituted municipality for itself or in its own territory, any act inherent in the exercise of the power in respect of the central municipality or in its territory which, according to section 18, should be performed by the urban agglomeration council, must rather be performed by the regular municipal council.
That substitution does not apply to the power or obligation of the urban agglomeration council to make by-laws or levy taxes.