Since the merger and subsequent demerger, the MUC has been replaced by the Montreal Agglomeration Council. This left the MMC in place, so the Agglomeration Council is a supra-municipal entity between the municipal level and the regional municipal level.
After the merger and subsequent separation, the MUC was replaced by the Montreal Agglomeration Council.  This resulted in the remaining Municipal Council being known as the Montreal Agglomeration Council (MMC), which acts as a governing body between local and regional municipal authorities.