Hibernate: send entity through TCP lose persistentbag(or not update it)

Question

Hi all, i have an entity with a @OneToMany relationship:

@OneToMany(mappedBy="a", fetch=FetchType.EAGER)
@Cascade(CascadeType.SAVE_UPDATE)
private List<B> bList;

Im writing a server/multiclient app: a client send A to server and server resend A to other clients. So, client1 send A with bList that has size 3. Server receive A entity, but this has bList size=1, always. I have debugged and so im sure of this.

Where is my mistake?

Thanks