// LabTestResult labTestResult was previously read from the session

UnitOfWork uow = session.acquireUnitOfWork();
LabTestResult ltr_clone = (LabTestResult) uow.refreshAndLockObject(labTestResult);
System.out.println(ltr_clone.getEdiUpdate()); // This prints NULL which is the current value in the DB

ltr_clone.setEdiUpdate(dt);
System.out.println(ltr_clone.getEdiUpdate()); // This prints dt which was just set

ltr_clone.getLabOrder().getLabTestResultSet().size();
System.out.println(ltr_clone.getEdiUpdate()); // This prints NULL [why?]

uow.commit(); // Finds nothing to commit