The backup software I use allows me to keep track of all changes in the Steam AC folder, '%USERPROFILE%\Assetto Corsa' and '%APPDATA%\Local\AcTools Content Manager'.
The Data Version update to 211 has changed the following files on my install:
View attachment 1432839
All of these files are found in '%APPDATA%\Local\AcTools Content Manager\Data'.
Nothing else seems to have changed.
Hopefully this solves the uncertainty, ambiguity & doubt around the Data Version updates in Content Manager.
@MasterFocus
I do not use Custom Paint stuff, but I assume the settings/setups are saved in the Paint Shop folder, are you sure you are using the Data (User) folder and not the main Data folder?