Index: modules/pvm/src/main/java/org/jbpm/pvm/internal/migration/InstanceMigrator.java
===================================================================
--- modules/pvm/src/main/java/org/jbpm/pvm/internal/migration/InstanceMigrator.java	(revision 6341)
+++ modules/pvm/src/main/java/org/jbpm/pvm/internal/migration/InstanceMigrator.java	(working copy)
@@ -100,7 +100,9 @@
         .list();
     int startIndex = calculateStartIndex(processDefinitions.size() - 1, migrationDescriptor);
     int endIndex = calculateEndIndex(processDefinitions.size() - 1, migrationDescriptor);
-    if (startIndex > endIndex) startIndex = endIndex;
+    if (startIndex > endIndex || startIndex < 0) {
+      startIndex = endIndex;
+    }
     return processDefinitions.subList(startIndex, endIndex);
   }
   
Index: modules/test-db/src/test/java/org/jbpm/test/migration/InstanceMigratorTest.java
===================================================================
--- modules/test-db/src/test/java/org/jbpm/test/migration/InstanceMigratorTest.java	(revision 6341)
+++ modules/test-db/src/test/java/org/jbpm/test/migration/InstanceMigratorTest.java	(working copy)
@@ -240,8 +240,12 @@
     }
     return result;
   }
-    
 
+  public void testNoProcessInstanceForMigration() {
+    ProcessDefinition pd2 = deployProcessDefinition("foobar", versionWithWildcardVersionRange);
+    repositoryService.deleteDeploymentCascade(pd2.getDeploymentId());
+  }
+
   public void testNoMigration() {    
     ProcessDefinition pd1 = deployProcessDefinition("foobar", originalVersion);
     ProcessInstance pi1 = startAndSignal(pd1, "a");