not understanding entityhome

[x490812]

I have an xhtml page that uses an enitythome object. In the page I have the following debug line:

xxxxxx #{taxSummaryHome.instance.id} xxx #{taxSummaryHome.managed} xxx #{taxSummaryHome.idDefined} xxx #{taxSummaryHome.id} xxxxx

The result of the debug line displays as follows:

xxxxxx  xxx false xxx true xxx 56 xxxxx

Why? - I have clearly set the taxSummaryHome.id object as it displays a valid value. In the debug line, I am calling 

#{taxSummaryHome.instance.id}

I thought that this should call getInstance which should create OR retrieve an entity if you have a valid Id. I have a valid Id, yet it is not retrieving.Why wont it?

here is my entity:

@Entity
@Table(name="TAX_SUMMARY")
@SequenceGenerator(name = "CAM_ID_SEQ", sequenceName = "CAM_ID_SEQ", allocationSize = 1)
public class TaxSummary implements Serializable {
     @Id
     @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "CAM_ID_SEQ")
     private long id;

     @Column(name="PROCESS_MONTH")
     @Temporal(TemporalType.TIMESTAMP)
     private Date processMonth;

     @Column(name="PERCENT_OF_UPB")
.
.
.

Here is my taxSummaryHome

@Name("taxSummaryHome")
@Restrict("#{identity.loggedIn}")
@Scope(value = ScopeType.SESSION)
public class TaxSummaryHome extends EntityHome<TaxSummary> {

     private static final long serialVersionUID = 1L;

     @Out(required = false, scope = ScopeType.SESSION)
     @In(required = false)     
     private SimpleSelection selectedTaxSummaryRows;


     public String Delete() {
.
.
.