Hi,
We already gave the answer several time about the pathway and the breadcrumb.
When you have an url with the pathway, you can't have a good breadcrumb. Because it's not possible to know where the user come from.
That's what the pathway give : a path way.
So, with the pathway, we could know from which category the user come from so we can display a real and complete breadcrumb. Because the breadcrumb contains links to parent categories. It means that you have to be sure that you can access to the category listing, you have to have this listing or you would have a 404 link.
After that a product could have several categories, the product listing could display products from all categories (or sub categories), etc.
So, you can't remove the "category_pathway-62" without loosing the information of the path, of the "where you come from", of the "what you want to display in the breadcrumb".
It's like a product without family, without link, abandoned.
Regards,