diff --git a/vcell-api/src/main/java/org/vcell/rest/health/HealthService.java b/vcell-api/src/main/java/org/vcell/rest/health/HealthService.java
index 406c5619e3..f5c277f13b 100644
--- a/vcell-api/src/main/java/org/vcell/rest/health/HealthService.java
+++ b/vcell-api/src/main/java/org/vcell/rest/health/HealthService.java
@@ -240,7 +240,7 @@ private void runsimLoop() {
 				
 				BioModel templateBioModel = XmlHelper.XMLToBioModel(new XMLSource(vcmlString));
 				templateBioModel.clearVersion();
-				templateBioModel.visitChildVersionables(new BioModel.ClearVersion());
+				templateBioModel.visitChildVersionables(new BioModel.SetRandomVersionKeys());
 				String newBiomodelName = "test_"+System.currentTimeMillis();
 				templateBioModel.setName(newBiomodelName);
 				// remove all existing simulations from stored template model, and add new one
diff --git a/vcell-core/src/main/java/cbit/vcell/biomodel/BioModel.java b/vcell-core/src/main/java/cbit/vcell/biomodel/BioModel.java
index 54c92d8a39..6faf70c322 100644
--- a/vcell-core/src/main/java/cbit/vcell/biomodel/BioModel.java
+++ b/vcell-core/src/main/java/cbit/vcell/biomodel/BioModel.java
@@ -270,6 +270,15 @@ public void accept(Versionable versionable) {
 		}
 	}
 
+	public final static class SetRandomVersionKeys implements Consumer<Versionable> {
+		@Override
+		public void accept(Versionable versionable) {
+			if (versionable.getVersion()!=null){
+				versionable.getVersion().testFixtureRandomizeKeys();
+			}
+		}
+	}
+
 	public void visitChildVersionables(Consumer<Versionable> operation) {
 		operation.accept(getModel());
 		for (SimulationContext sc : getSimulationContexts()){
diff --git a/vcell-core/src/main/java/org/vcell/util/document/SimulationVersion.java b/vcell-core/src/main/java/org/vcell/util/document/SimulationVersion.java
index 3df1ff3940..f4b411b12f 100644
--- a/vcell-core/src/main/java/org/vcell/util/document/SimulationVersion.java
+++ b/vcell-core/src/main/java/org/vcell/util/document/SimulationVersion.java
@@ -40,6 +40,11 @@ public SimulationVersion(KeyValue versionKeyNew, String versionNameNew, org.vcel
 	this.parentSimulationReference = argParentSimulationReference;
 }
 
+	@Deprecated
+	public void testFixtureRandomizeKeys() {
+		super.testFixtureRandomizeKeys();
+		parentSimulationReference = null;
+	}
 
 /**
  * Insert the method's description here.
diff --git a/vcell-core/src/main/java/org/vcell/util/document/Version.java b/vcell-core/src/main/java/org/vcell/util/document/Version.java
index 4853307789..bcfc1b4450 100644
--- a/vcell-core/src/main/java/org/vcell/util/document/Version.java
+++ b/vcell-core/src/main/java/org/vcell/util/document/Version.java
@@ -13,10 +13,7 @@
 import java.io.Serializable;
 import java.math.BigDecimal;
 import java.text.SimpleDateFormat;
-import java.util.ArrayList;
-import java.util.Date;
-import java.util.List;
-import java.util.Locale;
+import java.util.*;
 
 import org.vcell.util.BeanUtils;
 import org.vcell.util.Compare;
@@ -59,6 +56,12 @@ public Version(String name, User owner) {
     this.versionOwner = owner;
 }
 
+@Deprecated
+public void testFixtureRandomizeKeys() {
+    versionKey = new KeyValue(Long.toString(new Random().nextLong()));
+    versionBranchID = new BigDecimal(Long.toString(new Random().nextLong()));
+}
+
 public List<Object> compare(Object obj) {
 
     List<Object> diff = new ArrayList<Object>();
diff --git a/vcell-server/src/main/java/cbit/vcell/modeldb/ServerDocumentManager.java b/vcell-server/src/main/java/cbit/vcell/modeldb/ServerDocumentManager.java
index 6f0a7358e2..0f4ecc3f0f 100644
--- a/vcell-server/src/main/java/cbit/vcell/modeldb/ServerDocumentManager.java
+++ b/vcell-server/src/main/java/cbit/vcell/modeldb/ServerDocumentManager.java
@@ -791,6 +791,9 @@ public String saveBioModel(QueryHashtable dbc, User user, String bioModelXML, St
 			List<BioModel.VersionableInfo> versionableInfos = origBioModel.gatherChildVersionableInfos();
 			lg.info("Cached Biomodel("+key+"): "+versionableInfos);
 		}
+//	}else{
+//		User forceClearVersionUser = new User("forceClearVersionUser",new KeyValue("0"));
+//		forceDeepDirtyIfForeign(forceClearVersionUser, bioModel);
 	}
 
 	boolean bSomethingChanged = false;