I've been tinkering around with the files and I think I might've figured out why it doesn't work with ironman. After deleting everything but the province name folder path and descriptor, I noticed that cultures were changed a bit in ways that would break compatibility. "Cosmopolitan French" is filled with the changed province names for France but the designated one that Paradox uses for dynamic names is "french" and that text file is empty. There aren't any gameplay changes whatsoever but the checksum is broken by the culture changes. I would love for this to be ironman compatible so I thought I would share my research. I edited the version that didn't change country names for easier navigation.