Zen Cart 1.3.8a - site set up by host - from Import/Export Manager clicking on "download products to .csv file to edit (attributes included)" downloads all the products but does not include each Product ID number - so if I change or update anything I end up creating a "new" product when I import undated file. How can I include each products Product ID number when I download file?

Have tried through cpanel - and the layout of the csv file is totally different and harder to understand than the csv file through the admin site.

Appreciate your help - and yes have read for days trying to find an answer - thanks!