I started playing Scenario no. 13, the campaign from 1762 to 1764, and was surprised when I noticed that Quebec was owned by the Prussians instead of the British, who historically controlled the city after the Battle of Quebec in September of 1759. I checked the other scenarios and saw that they were correct, except for Scenario no. 12 which has Quebec under the control of Austria. The city can be entered in the 13th scenario, but not in the 12th, and it isn't a strategic city.
Is there any gameplay reason why the British wouldn't control Quebec?