Loss of state conversation - jboss seam

[Diego Gomes Araujo]

I'm having the following problem,

I have two pages of a search and another for editing.

The process works as follows

-> Search
-> I select the item
-> and click on edit

edit the page brings all the data for the item selected, then I make the change, but when I save the data
he loses his status, and puts my attributes as null.

Does anyone have any idea why this happening?