What are the territorial exchanges planned for a Post-War Chile? The CW appears to be fairly consistent in what it deems to be appropriate post-war action. Liberate, don't dominate. While territorial exchanges do take place, the CW appears to recognise the importance of not pushing it too far.
The war in South America however, that's a war that took place, precisely due to pushing it too far. Chile taking the Bolivian coast and the dismantling of the Peru-Bolivian Confederation. Even in OTL, almost 150 years later, it's still a sticking point between Bolivia & Chile. While I can imagine the CW trying to pressure Chile into not demanding further exchanges, I can't see Chile not pushing for something.
The writing is on the wall that the CW are slowly but surely looking at a victory in this conflict, but I can't see it being able to maintain a peace post-war, not without turning allies into enemies and enemies into friends.