1. Log unto the primary dev system in the system-types portal
  2. Enter the app management of the system-types or of the data-sources and change the scope to the right scope, usually "System" but it can also be another scope
  3. Make the changes
  4. Export as json
  5. Place / update in the right folder
    1. main place: 
      C:\Projects\2sxc-dnn742\Website\DesktopModules\ToSIC_SexyContent\.data\contenttypes
    2. Dev testing only (be carefull, you shouldn't have the same type in both): 
      C:\Projects\2sxc-dnn742\Website\DesktopModules\ToSIC_SexyContent\.data-custom\contenttypes
  6. Test the result if everything works
  7. When done, push to core repo
  8. also republish the main app and push to core repo