That is the CSV format. How do you get the idea that you cannot edit such a file?
Read the file into Excel and you get a list of fields.
What you have to do, is to make sure that all the fields are included in the export.
Also you have to take care about fields that have linebreaks - these usually cause irritation as the linebreaks are output as end-of-record characters.
see this thread for an export of all tags
/t/9520/1