Using an import file to delete shipping rules offers several advantages:

1. Bulk Deletes Across Multiple Zones:
With an import file, you can perform bulk deletions from multiple zones at once, saving you time and effort compared to deleting rules individually.
   
   
2. Better Control Over the Deletion Process:
By viewing all your rates in one file, you gain better control over the deletion process. This overview allows you to manage and confirm the rules you’re deleting more effectively.
   
   
3. Backup Recommendation:
It’s recommended to save the original file as a backup before making any changes. This ensures that you have a copy of your initial settings, which you can restore if needed.
   
   
4. Increased Reliability:
The import file method is more reliable than deleting rules one by one. This approach reduces the risk of errors and ensures that all intended deletions are completed accurately.