Hi,
The link is done by an entry menu_XX (where XX is the id of the menu) in jos_hikashop_config. In it, there is all the hikashop options of the menu which are serialized and base64_encoded. In it, there is the key "selectparentlisting" where the category id for the menu is saved.
Not sure if that's possible but you could try to add a parameter cid to the menu URL in the jos_menu table.
If it works, you would have this:
macpro3.sideralia.it/www/enotecapenati.c...ing&cid=XX&Itemid=58
where XX would be the id of the category and which would be taken into account by the system automatically, overriding the category id selected in the hikashop options of the menu 58.