diff --git a/spring-batch-core/src/main/java/org/springframework/batch/core/jsr/configuration/xml/JsrBeanDefinitionDocumentReader.java b/spring-batch-core/src/main/java/org/springframework/batch/core/jsr/configuration/xml/JsrBeanDefinitionDocumentReader.java
index 80f52bf52..ae2fc54f5 100644
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/jsr/configuration/xml/JsrBeanDefinitionDocumentReader.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/jsr/configuration/xml/JsrBeanDefinitionDocumentReader.java
@@ -15,11 +15,13 @@
  */
 package org.springframework.batch.core.jsr.configuration.xml;
 
+import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Properties;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
+
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.springframework.batch.core.jsr.configuration.support.JsrExpressionParser;
@@ -121,7 +123,12 @@ public class JsrBeanDefinitionDocumentReader extends DefaultBeanDefinitionDocume
 				return new Properties();
 			}
 
-			jobParameters.putAll(properties);
+			Enumeration<?> propertyNames = properties.propertyNames();
+
+			while(propertyNames.hasMoreElements()) {
+				String curName = (String) propertyNames.nextElement();
+				jobParameters.put(curName, properties.getProperty(curName));
+			}
 		}
 
 		return jobParameters;
diff --git a/spring-batch-core/src/main/java/org/springframework/batch/core/jsr/launch/JsrJobOperator.java b/spring-batch-core/src/main/java/org/springframework/batch/core/jsr/launch/JsrJobOperator.java
index 6932fe566..fe26b4701 100644
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/jsr/launch/JsrJobOperator.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/jsr/launch/JsrJobOperator.java
@@ -18,6 +18,7 @@ package org.springframework.batch.core.jsr.launch;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.Enumeration;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
@@ -426,7 +427,6 @@ public class JsrJobOperator implements JobOperator, InitializingBean {
 			throws JobExecutionAlreadyCompleteException,
 			NoSuchJobExecutionException, JobExecutionNotMostRecentException,
 			JobRestartException, JobSecurityException {
-
 		org.springframework.batch.core.JobExecution previousJobExecution = jobExplorer.getJobExecution(executionId);
 
 		if (previousJobExecution == null) {
@@ -556,8 +556,13 @@ public class JsrJobOperator implements JobOperator, InitializingBean {
 			}
 		}
 
-		if (params != null && !params.isEmpty()) {
-			jobRestartProperties.putAll(params);
+		if (params != null) {
+			Enumeration<?> propertyNames = params.propertyNames();
+
+			while(propertyNames.hasMoreElements()) {
+				String curName = (String) propertyNames.nextElement();
+				jobRestartProperties.setProperty(curName, params.getProperty(curName));
+			}
 		}
 
 		return jobRestartProperties;
diff --git a/spring-batch-core/src/test/java/org/springframework/batch/core/jsr/launch/JsrJobOperatorTests.java b/spring-batch-core/src/test/java/org/springframework/batch/core/jsr/launch/JsrJobOperatorTests.java
index 32f2ef788..52aafee51 100644
--- a/spring-batch-core/src/test/java/org/springframework/batch/core/jsr/launch/JsrJobOperatorTests.java
+++ b/spring-batch-core/src/test/java/org/springframework/batch/core/jsr/launch/JsrJobOperatorTests.java
@@ -468,6 +468,24 @@ public class JsrJobOperatorTests {
 		assertTrue(properties.getProperty("userKey1").equals("userVal1"));
 	}
 
+	@Test
+	public void testGetRestartJobParametersWithDefaults() {
+		JsrJobOperator jobOperator = (JsrJobOperator) jsrJobOperator;
+
+		JobExecution jobExecution = new JobExecution(1L,
+				new JobParametersBuilder().addString("prevKey1", "prevVal1").addString("prevKey2", "prevVal2").toJobParameters());
+
+		Properties defaultProperties = new Properties();
+		defaultProperties.setProperty("prevKey2", "not value 2");
+		Properties userProperties = new Properties(defaultProperties);
+
+		Properties properties = jobOperator.getJobRestartProperties(userProperties, jobExecution);
+
+		assertTrue(properties.size() == 2);
+		assertTrue(properties.getProperty("prevKey1").equals("prevVal1"));
+		assertTrue("prevKey2 = " + properties.getProperty("prevKey2"), properties.getProperty("prevKey2").equals("not value 2"));
+	}
+
 	@Test
 	public void testNewJobParametersOverridePreviousRestartParameters() {
 		JsrJobOperator jobOperator = (JsrJobOperator) jsrJobOperator;