Since the ransomware does not save any information about the unencrypted files, the decryptor can’t guarantee that the decrypted data is identical to the one that was previously encrypted. Therefore, the decryptor by default will opt on the side of caution and not remove any encrypted files after they have been decrypted. If you want the decryptor to remove any encrypted files after they have been processed, you can disable this option. Doing so may be necessary if your disk space is limited