I have multiple categories in my ZOO app, how can I make the JoomSEF's zoo extension add the main category of the item and not a "random" one?

Ex:

APP BOOKS, categories (genre -main category-, author, editorial, year)

i want the url like => books/genre/spy/item

now is like => books/editorial/macmillan/item


Why doesn't takes the main category by default?

And why the categories handling do this?

books/genre/subgenre (selecting an item will bring us to) books/genre/subgenre/item

books/editorial/company (selecting an item will bring us to) books/genre/subgenre/item (and not to) books/editorial/company/item

Hi,
Thank you for your report, we've just released an updated version that handles the Primary category option correctly.
You can use the Manage Extensions page in JoomSEF to update your Zoo extension. Make sure to update or delete the already created SEF URLs afterwards, so they are recreated correctly.