Session session=...;
Person person = session.bySimpleNaturalId( Person.class ).load( "123-45-6789" );
person.setSsn( "987-65-4321" );
...
// returns null!
person = session.bySimpleNaturalId( Person.class )
.setSynchronizationEnabled( false )
.load( "987-65-4321" );
// returns correctly!
person = session.bySimpleNaturalId( Person.class )
.setSynchronizationEnabled( true )
.load( "987-65-4321" );