Mike,
I know that it was a very bad design from the very start. How it happened? My guess is that each tenant had an FPE service panel in their own stores. The mains were in the liquor store. The owner changed the panel/mains in the liquor store but never gave it a thought to change out anything else down stream. So when the equipment in the restaurant goes bad, it tripped the main instead of the FPE branch circuit. Which cause the customers of the restaurant, not to get their breakfast! I believe the owner of the restaurant finally paid to get her service panel changed. (and I believe it came out of her pocket.)
