Thanks for your comment @skandg43264764. The problem is that it is thousands of products and you can only delete them one by one if you don't want to affect the recommendations by deleting the whole catalogue. It would have been nice if there was an easier way to do this and not impact production re...

Similar products are returning incorrect recommendations (not similar at all) because, every time we upload a csv feed, it adds categories to the products.  Is there a way to overwrite entity.categoryId in stead of appending it to the file upload?  This is affecting our production environment.