I am having a brain freeze on this rule:
Factories in a home province in which hostile armies are present cannot produce. Nor can the occupying force itself produce in an occupied foreign factory.
What does the text in bold mean exactly? Does it mean that the hostile force cannot produce in their own home province as well?
It is clarifying that the occupying force can't use the factory they are occupying to produce.
I.e., just because you have prevented them from using the factory to produce that doesn't mean you get to use it.