Note you quite often get formatting / save type problems if you write that /text file from scratch (which results in game not reading it).
File must start with ¬ on the top line like original one does.
Easiest way to make sure you get a working version I found was to copy and paste the imperial_campaign_... one at folder level, re-name 'copy_of_imperial_campaign_.... to suit your campaign name and then change the text within that to suit your new regions.
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