That's an odd answer from MMC since a smart alternator would be regulated by the ECU not BCU. If it doesn't have Ford's BMS it will have something similar to regulate.
My Roadster has a smart or at least remotely regulated alternator but that comes from the powertrain control module (PCM) a fancy ECU that hooks up to transmission as well. FWIW it doesn't appear to need a reset on fitting a new battery.
