Huh, if I open up a newly exported save created after this update and open it in notepad++, I just see a string of numbers and letters after the town name instead of the usual parameters....I'll have to look into it more, could be doing something wrong on my end.
I've checked this & you're right, sorry about that! I've just released a small update that fixes this. Any compressed save files are now properly decompressed before exporting, and I've also improved the formatting of the resulting JSON file.
