If there are an errors in loading the file, it is difficult to troubleshoot the CSV file for import because it is encrypted. As a work around, admins need to export an encrypted file and non-encrypted file for testing from their source system. This creates a lot of additional work.
It would be better if there was an easier way to decrypt a file. To decrypt the file, an admin would need to have the Private Key for decryption or be able to load the encrypted file through the Rules Engine and see the results. This could work ok if the Rules Engine provides all error logs. But if the file is not loading due to an error, its not possible. The best solution would be to get access to the private key somehow.