progressMonitor.beginTask(Messages.Migration2To3_MIGRATING_DATA, totalProgress);
ObjectContainer oc = Db4o.openFile(configFactory.createConfiguration(), dbFileName);
totalProgressIncremented = migrate(progressMonitor, totalProgress, totalProgressIncremented, oc);
oc.commit();
oc.close();
progressMonitor.worked(totalProgress - totalProgressIncremented);
return new MigrationResult(false, false, false);