Distribution list checked as hidden not showing in admin

[digital at usina-de-imagens.com.br]

Greetings,

Would someone please tell if this is the normal behaviour or something odd is 
going on:

1 - I create a new distribution list
2 - I check the "Hidden" box, therefore only authenticated users can use it
3 - When I come back to the admin later, the list does not show up
4 - That means I cannot delete it through the admin. Nor can anyone know of 
its existence.

Is that the way it should be? If not, is there anything I can do to fix it?

TIA,
JK