Inclusion of category outputs at menu positions

[UweS]

If there is a Menu item for a category, the Menue item should be recursively included in the URL routing.

Setup: Menue item Downloads with assigned jdownload area
Submenu with assigned category and a folder in it

ToDo: Navigate from Submenu to the Folder 
Expected: URL should be ../downloads/Sub/folder/category/ID
Actual: URL/Breadcrump is ../downloads/folder/category/ID...

THX