Duplicates links to the items.

Hey, I found strange thing.
Not all my menu items create duplicates.

I have this categories in FC:

Cars

-New Cars
--Sport Cars
---BMW
---Audi

-Used Cars
--Sport Cars
---BMW
---Audi

So, when I create menu item (Top Rated Cars) on parent category Cars with specific filter and order - urls in this page are CORRECT!!!!!!!

site.com/cars/used-cars/sport-cars/bmw/item/15-some-car

Breadcrumbs:

Home -> Best Cars

Now, I want to create page with top rated used BMW cars.

So, I duplicated this menu item and changed category.



I ONLY changed category!

Also I changed alias - top-rated-bmw-used-cars

But now, link have urls like:

site.com/top-rated-bmw-used-cars/item/15-some-car

Breadcrumbs:

Home -> Top Rated BMW Used Cars -> Sport Cars -> BMW

SO, this is BUG. It happens on with 5 level depth.

I changed FC menu item type from Category to Categories



And now all fine.

But this is not normal. We have problems with Category menu type.