Cant open the attachments after used backup files


I was able to copy the back files to the mem client folder and all the email are there, however:

The email are available -

The folders were i organized the emails are present, but are empty - the emails are not inside each folder
when i try to open the attachments, it says the attachment cannot be downloaded

Can anyone help me please? I really need the emails organized by folders and I MUST open the attachments

Thanks in advance