148.4. Where a by-law is passed ordering the annexation of the whole or part of the territory of a municipality, or a by-law is passed to submit a joint petition for a regrouping affecting the territory of the municipality, or where the Minister of Municipal Affairs orders, in conformity with section 12 of the Act to promote the regrouping of municipalities (chapter R-19), consultation of the persons interested in a plan for regrouping which has not been the object of a joint petition and affects the territory of the municipality, the electoral list or any part thereof used for the last election held in the territory of the municipality, or, if such is the case, in that part of the territory contemplated in the by-law for the annexation of part of the territory, shall be revised in conformity with this subdivision.