Use the tool "Export/Import Settings" for exporting the settings before reinstalling the 3ds Max or Windows. Or for transferring them to another computer. https://youtu.be/ZfxNnBef__Q Before restoring settings you should close the plugin using the menu "File" => "Exit" Dont miss to turn on all desired settings to import. Some settings, such as database, by default, are ignored By default the settings are placed in this directory: %USERPROFILE%\\AppData\\Local\\Autodesk\\3dsMax\\20XX - 64bit\\ENU\\scripts\\Kstudio\\ProjectManager_3\\Settings\\ About upgrading a database from 2nd to 3rd version please read the next article: https://3d-kstudio.com/support/faq/#21770