diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/ontology/update/OntologyUpdater.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/ontology/update/OntologyUpdater.java
index 7c0f445c4..abcb095e7 100644
--- a/webapp/src/edu/cornell/mannlib/vitro/webapp/ontology/update/OntologyUpdater.java
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/ontology/update/OntologyUpdater.java
@@ -50,11 +50,6 @@ public class OntologyUpdater {
 	private OntologyChangeLogger logger;
 	private OntologyChangeRecord record;
 	
-	private OntModel OLD_TBOX_MODEL = null; // TODO change this
-	
-	private OntModel oldTBoxAnnotationsModel;
-	private OntModel newTBoxAnnotationsModel;
-	
 	public OntologyUpdater(OntologyUpdateSettings settings) {
 		this.settings = settings;
 		this.logger = new SimpleOntologyChangeLogger(settings.getLogFile(),
@@ -83,7 +78,7 @@ public class OntologyUpdater {
 		AtomicOntologyChangeLists changes = 
 				new AtomicOntologyChangeLists(rawChanges, 
 						settings.getOntModelSelector().getTBoxModel(), 
-						OLD_TBOX_MODEL);
+						settings.getOldTBoxModel());
 		
 		//updateTBox(changes);
 		//preprocessChanges(changes);
@@ -182,7 +177,8 @@ public class OntologyUpdater {
 	}
 	
 	private void updateTBoxAnnotations() throws IOException {
-		(new TBoxUpdater(oldTBoxAnnotationsModel, newTBoxAnnotationsModel,
+		(new TBoxUpdater(settings.getOldTBoxAnnotationsModel(),
+				settings.getNewTBoxAnnotationsModel(),
 		        settings.getOntModelSelector().getTBoxModel(), logger, record))
 		        .updateVitroPropertyDefaultValues();
 	}
diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/servlet/setup/UpdateKnowledgeBase.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/servlet/setup/UpdateKnowledgeBase.java
index 488d07ca3..0d00aed4f 100644
--- a/webapp/src/edu/cornell/mannlib/vitro/webapp/servlet/setup/UpdateKnowledgeBase.java
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/servlet/setup/UpdateKnowledgeBase.java
@@ -4,6 +4,7 @@ package edu.cornell.mannlib.vitro.webapp.servlet.setup;
 
 import java.io.File;
 import java.io.FileInputStream;
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.util.Iterator;
 
@@ -15,6 +16,7 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
 import com.hp.hpl.jena.ontology.OntModel;
+import com.hp.hpl.jena.ontology.OntModelSpec;
 import com.hp.hpl.jena.rdf.model.Model;
 import com.hp.hpl.jena.rdf.model.ModelFactory;
 import com.hp.hpl.jena.rdf.model.RDFNode;
@@ -55,10 +57,15 @@ public class UpdateKnowledgeBase implements ServletContextListener {
 									"removedData.rdf";
 	private final String SPARQL_CONSTRUCTS_DIR = DATA_DIR + "sparqlConstructs/";
 	private final String MISC_REPLACEMENTS_FILE = DATA_DIR + "miscReplacements.rdf";
+	private final String OLD_TBOX_MODEL_DIR = DATA_DIR + "oldVersion/";
+	private final String OLD_TBOX_ANNOTATIONS_DIR = DATA_DIR + "oldAnnotations/";
 	
 	public void contextInitialized(ServletContextEvent sce) {
-				
-		/* 
+		
+		// TODO remove when ready
+		if (true) {
+			return;
+		}
 
 		ServletContext ctx = sce.getServletContext();
 		
@@ -80,6 +87,11 @@ public class UpdateKnowledgeBase implements ServletContextListener {
 		WebappDaoFactory wadf = (WebappDaoFactory) ctx.getAttribute("webappDaoFactory");
 		settings.setDefaultNamespace(wadf.getDefaultNamespace());
 		
+		OntModel oldTBoxModel = loadModelFromDirectory(ctx.getRealPath(OLD_TBOX_MODEL_DIR));
+		settings.setOldTBoxModel(oldTBoxModel);
+		OntModel oldTBoxAnnotationsModel = loadModelFromDirectory(ctx.getRealPath(OLD_TBOX_ANNOTATIONS_DIR));
+		settings.setOldTBoxAnnotationsModel(oldTBoxAnnotationsModel);
+		
 		try {
 			doMiscAppMetadataReplacements(ctx.getRealPath(MISC_REPLACEMENTS_FILE), oms);
 			(new OntologyUpdater(settings)).update(); 
@@ -93,7 +105,7 @@ public class UpdateKnowledgeBase implements ServletContextListener {
 			throw new RuntimeException(errMsg, ioe);
 		}	
 		
-		*/
+		
 		
 	}	
 	
@@ -134,6 +146,35 @@ public class UpdateKnowledgeBase implements ServletContextListener {
 		}
 	}
 	
+	private OntModel loadModelFromDirectory(String directoryPath) {
+		OntModel om = ModelFactory.createOntologyModel(OntModelSpec.OWL_MEM);
+		File directory = new File(directoryPath);
+		if (!directory.isDirectory()) {
+			throw new RuntimeException(directoryPath + " must be a directory " +
+					"containing RDF files.");
+		}
+		File[] rdfFiles = directory.listFiles();
+		for (int i = 0; i < rdfFiles.length; i++) {
+			try {
+				File f = rdfFiles[i];
+				FileInputStream fis = new FileInputStream(f);
+				try {
+					if (f.getName().endsWith(".n3")) {
+						om.read(fis, null, "N3");
+					} else {
+						om.read(fis, null, "RDF/XML");
+					}
+				} catch (Exception e) {
+					log.error("Unable to load RDF from " + f.getName(), e); 
+				}
+			} catch (FileNotFoundException fnfe) {
+				log.error(rdfFiles[i].getName() + " not found. Unable to load" +
+						" RDF from this location.");
+			}
+		}
+		return om;
+	}
+	
 	public void contextDestroyed(ServletContextEvent arg0) {
 		// nothing to do	
 	}