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diff --git a/tests/org.simantics.db.tests/src/org/simantics/db/tests/regression/bugs/Issue3422Test1.java b/tests/org.simantics.db.tests/src/org/simantics/db/tests/regression/bugs/Issue3422Test1.java
new file mode 100644
index 000000000..4d82714fa
--- /dev/null
+++ b/tests/org.simantics.db.tests/src/org/simantics/db/tests/regression/bugs/Issue3422Test1.java
@@ -0,0 +1,77 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.tests.regression.bugs;
+
+import org.junit.Test;
+import org.simantics.db.Resource;
+import org.simantics.db.Session;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.common.request.WriteRequest;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.exception.ImmutableException;
+import org.simantics.db.service.ClusterControl;
+import org.simantics.db.service.XSupport;
+import org.simantics.db.testing.cases.FreshDatabaseTest;
+import org.simantics.db.testing.common.TestBase;
+import org.simantics.layer0.Layer0;
+
+/**
+ * Tests that commit which changes only meta data will create revision.  
+ */
+public class Issue3422Test1 extends FreshDatabaseTest {
+    private Resource testRoot;
+	@Test
+    public void test() throws DatabaseException {
+        Session session = getSession();
+        session.syncRequest(new Init());
+        session.syncRequest(new Modify());
+    }
+    class Init extends WriteRequest {
+        @Override
+        public void perform(WriteGraph g) throws DatabaseException {
+            ClusterControl cc = (ClusterControl)g.getService(ClusterControl.class);
+            cc.collectClusters(Integer.MAX_VALUE);
+            int nClusters = cc.flushClusters(); 
+            Layer0 l0 = Layer0.getInstance(g);
+            g.flushCluster(); // Starts new cluster.
+            Resource rl = g.getResource(TestBase.ROOT_LIBRARY_URI);
+            testRoot = g.newResource();
+            g.claim(testRoot, l0.InstanceOf, l0.Library);
+            g.claim(rl, l0.ConsistsOf, testRoot);
+            XSupport xs = (XSupport)g.getService(XSupport.class);
+            assertFalse("GetImmutable did not work.", xs.getImmutable(testRoot));
+            xs.setImmutable(testRoot, true);
+            assertTrue("SetImmutable did not work.", xs.getImmutable(testRoot));
+            cc.collectClusters(Integer.MAX_VALUE);
+            int nClusters2 = cc.flushClusters(); 
+            assertTrue("Could not relase clusters.", nClusters + 1 == nClusters2);
+        }
+    }
+    class Modify extends WriteRequest {
+        @Override
+        public void perform(WriteGraph g) throws DatabaseException {
+            ClusterControl cc = (ClusterControl)g.getService(ClusterControl.class);
+            cc.collectClusters(Integer.MAX_VALUE);
+            int nClusters = cc.flushClusters();
+            System.out.println("clusters count=" + nClusters);
+            Layer0 l0 = Layer0.getInstance(getSession());
+            XSupport xs = (XSupport)g.getService(XSupport.class);
+            assertTrue("SetImmutable did not work.", xs.getImmutable(testRoot));
+            try { 
+                g.claim(testRoot, l0.InstanceOf, l0.Relation);
+            } catch (ImmutableException e) { 
+                return;
+            }
+            fail("Immutable check did not work.");
+        }
+    }
+}