Hello,
That's because the format in which you are importing the exported file in excel, is not the appropriate one.

I know that you can tell excel which is the format of the csv you are importing, but meanwhile, try adding this on the first line of the CSV file:

sep=;

I've found this possible solution here: http://superuser.com/questions/180964/how-to-open-semicolon-delimited-csv-files-in-us-version-of-excel

Tank you,
Joan