Hibernate does not consider field for Insert

Question

I have a class Cliente which has composite key:

@Entity
@Table(name = "Clientes")
@IdClass(ClientePK.class)
public class Cliente implements Serializable {

    //@EmbeddedId
    //private ClientePK clientePK;
    @Id
    @Column(name = "Id_Cliente", nullable = false, length = 15)
    private long idCliente;

    @Id
    @Fetch(FetchMode.SELECT)
    @ManyToOne
    @JoinColumn(name = "Loja", nullable = false)
    private Loja loja;

}

public class ClientePK implements Serializable {

    private long idCliente;
    private Loja loja;
}

Next I have a class ClienteHistorico which also contains composite key.

@Entity
@Table(name = “Clientes_Historicos”)
@IdClass(ClienteHistoricoPK.class)
public class ClienteHistorico implements Serializable {

    @Id
    @Resolvable(colName = "Id. Cliente Histórico")
    @Column(name = "Id_Cliente_Historico", nullable = false)
    private Long idClienteHistorico;

    @Id
    @Fetch(FetchMode.SELECT)
    @ManyToOne
    @JoinColumn(name = "Loja", nullable = false)
    private Loja loja;

    @Resolvable(colName = "Cliente")
    @Fetch(FetchMode.SELECT)
    @JoinColumns({
        @JoinColumn(name = "id_cliente", referencedColumnName = "Id_Cliente", nullable = false, insertable = true)
        ,
        @JoinColumn(name = "loja", referencedColumnName = "loja", nullable = false, insertable = false, updatable = false)
    })
    @MapsId("loja")
    @ManyToOne(optional = false)
    private Cliente cliente;

}

I used the annotation @MapsId("loja") to indicate that the field loja primary key should be used with the client connection field FK itself.

It happens that when performing the Insert in ClienteHistorico the field cliente is not being taken into consideration for insertion.

Informações:   Hibernate: insert into Clientes_Historicos (Data, Tipo, Usuario, Id_Cliente_Historico, Loja) values (?, ?, ?, ?, ?)
WARN:   SQL Error: 1400, SQLState: 23000
ERROR:   ORA-01400: não é possível inserir NULL em ("MARTINELLO"."CLIENTES_HISTORICOS"."ID_CLIENTE")

Informações:   HHH000010: On release of batch it still contained JDBC statements
ERROR:   HHH000346: Error during managed flush [org.hibernate.exception.ConstraintViolationException: could not execute statement]