"It looks as though the address locator might have been copied into the database rather than created from scratch."
Not sure what "copied into the database" means because new address locators are always created inside the database to my knowledge. If you have a locator created, ArcFM's Address Search tool has a pulldown at the top that lets you select which locator you want it to use.
Thanks for the response! I will create a new locator and see if it displays in the pulldown.