WooCommerce > CDiscount Flux > Configure > Filters
You can perform a selective export of your catalog from the Filters tab, different filters are available: manufacturer, supplier.
You will move from right to left manufacturers or suppliers that you want to filter. Thus the products covered by the column on your left, marked by a red cross will not be exported:
In the above example all products of the brand/manufacturer “Fashion Manufacturer” will not be exported.
Note that if the product is already online on CDiscount, it will not be taken offline when adding the filter, you must have deleted it.