Setting item in desktop menu - disappeared detailed list after modifications

[Jabba]

Hi all,
brief presentation: I'm an Italian user of xfce since version 3.16, I
think it's the interface in Unix world. Thanks to all all the contributors.

After having done some little modifications on my desktop menu, I've
lost the detailed of setting tools in

http://www.xfce.org/documentation/docs-4.2/images/smgr_from_root_menu.png

It appears only the first item. I've read some documentation and tried
many ways to manage this and the only way I've found is restoring the
default xml file.

Thanks for hints, Jabba.