Products that arrived by CSV, migration or API have no category, and Shopify only suggests one while you create a product by hand. Catalog Butler reads the whole catalog, proposes a category for every product from the official taxonomy, shows you the entire change before a single word is written, applies it in bulk, and puts everything back with one click if you change your mind. Feed apps read this field; they never fill it. Fix it once and every feed inherits it.
Correction of product information
If you notice any omissions or errors in the product information on this page, please use the correction request form below.