Inputting and Outputting Media > Importing Media Files and Sequences > Media Files Import Preferences and Import History Options > ARRI-Only Preferences >
Processing Menu

Processing Version box
  Select the version of the colour science used to process the file, or use From File Header to have Flame read the version of the colour science from the header of the imported file. Use From File Header unless you are trying to recreate a look based on a specific colour science.