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1. You must include the script's unique ID.  The script ID or GUID is a unique identifier that will allow Enterprise Tester to match the update in the CSV back to the existing script.  When exporting scripts from Enterprise Tester, ensure that you include the Id field.  You should always retain this in the CSV if you are importing updates.
2. At a minimum, the following fields must be included in the CSV file:
   
   1. Id
   2. Name
   3. Step Data
   4. Step Description
   5. Step Expected Result
   6. Step Notes
   7. Step Number
      
   8. All other fields that have been updated
   9. 
      

 Don't forget to also map the fields you wish to import changes for.