It's not necessary to import CSVs into Amazon Channel because we use your e-commerce Platform product data as the source of truth. Hence, uploading CSV files should be done in your e-commerce Platform (either to standard fields like price, name, description or to custom fields like Amazon_price, Amazon_bullet_1).

Once in your e-commerce Platform, Amazon Channel can sync the data with your Amazon listings (after configuring in one of our 3 listing modes)