Google export features missing from Features tab

I might be missing the obvious but the “Google Export Features” that are highlighted in the KB article on exporting to Google Merchant Center (CS-Cart Documentation — CS-Cart 4.15.x documentation) are missing from the Features tab on all my products. I have activated the the data feeds addon so that can't be the problem. Am I missing something or do I have to add those fields manually?



Thanks,



Arash