Slightly stuck on data update

Hey,

I've got myself a bit confused with the latest data update. 

So the download has the regular “sortitoutsi data update changes” file. Then it has all those other files like “England (league” “France (League)” and so on. Am I supposed to do something with these other files? Do I import them one by one in the editor? 

Going in game, most of the files seem to work when you start a new save but the “players and staff” file tells me that it needs to be verified and tested with the editor?

Basically the handful of other files has thrown me somewhat.