How to modify the url of the product page

-- HikaShop version -- : 2.3.5
-- Joomla version -- : 3.3.6

Hi !
I am working on setting up my store on Hikashop. My store has been active on the web for many years now. The problem I am facing is that the url for my products already exist in an article format, and as I can see, the urls are already defined by Hikashop without being able to change it.

For example :
my url for one product is : www.xxx.com/aggression-natural-remedy-dog-cat
and hikashop generates this url : www.xxx.com/hikashop-menu-for-products-l...1-aggression-formula

I can't find anywhere on the documentation about how to configure urls. Can anybody help to teach me how I can keep my already existing urls and so keep my traffic to my site ?

Thanks !
Karen