PostConstruct injected value is null

[nucahx]

@Name("phoneRegistrationListFilterUser")
@Scope(ScopeType.CONVERSATION)
public class PhoneRegistrationListFilterUser extends EntityQuery<PhoneRegistration>
{

    @In(required = true)
    TnsUser tnsUser;

    @Factory("availUsers")
    private void loadAvailUsersList()
    {
        System.out.println(tnsUser);
    }

    @PostConstruct
    public void init()
    {
        System.out.println("Post construct");
        System.out.println(tnsUser);
       // this.userFieldOffice = tnsUser.getFieldOfficeId();
    }
}

I am having an issue where tnsUser is null in the @PostConstruct init method.  It is not null in the @Factory method.  I was under the impression that the injection should be complete when the @PostConstruct method is called. Also the @In annotation sets the value as required, so I do not understand how it could possibly be null.
Thank you for your help.