Hi,
The category_pathway is added in the url when you display the product page from a menu or module, it create a path useful for the detailed breadcrumb.
To remove it, you can edit the view of the product listing, generally "product / listing_img_title" and remove ".$this->category_pathway" for the $link var.
$link = hikashop_completeLink('product&task=show&cid='.$row->product_id.'&name='.$row->alias.$this->itemid.$this->category_pathway);
>>>>>>>
$link = hikashop_completeLink('product&task=show&cid='.$row->product_id.'&name='.$row->alias.$this->itemid);