For example, the relationship between Cetland and the Ahktulian Empire is now very different. Previously, in the old geography, the relationship between those two was about the Ahktulian Empire's desire to conquer Cetland. The whole point of that was take out a major power and conquer the surrounding lands, which would work until the Ahktulian Empire butted up against Marsoul's sphere of influence. Now the relationship is all about the Ahktulian Empire's goal of making the Adune Sea into an Ahktulian lake (that goal is known as the Struggle for the Dawn). Because of the particulars of Ubernorden's (new) geography, controling the Adune Sea would allow the Ahktulian Empire to dominate most or all of Ubernorden. That is something Cetland does not to occur. So they have been battling one another over that for centuries.
At some point in time I will give you all a (very rough) map of Ubernorden just so that you may understand what is going on.
If there are any mistakes concerning the redone stories, if I missed anything that it still with the old geography, just let me know.