Program: 18345
Project: 18345
Buggy source:
/** 
 * Copy the configuration of a cluster   {@link Group}. <b>1.</b> Updates configuration admin from Hazelcast using source config. <b>2.</b> Creates target configuration both on Hazelcast and configuration admin.
 * @param sourceGroupName the source cluster group.
 * @param targetGroupName the target cluster group.
 */
public void copyGroupConfiguration(String sourceGroupName,String targetGroupName){
  try {
    Configuration conf=configurationAdmin.getConfiguration(Configurations.GROUP,null);
    if (conf != null) {
      Dictionary configAdminProperties=conf.getProperties();
      if (configAdminProperties == null) {
        configAdminProperties=new Properties();
      }
      Map<String,String> sourceGropConfig=instance.getMap(GROUPS_CONFIG);
      for (      Map.Entry<String,String> parentEntry : sourceGropConfig.entrySet()) {
        configAdminProperties.put(parentEntry.getKey(),parentEntry.getValue());
      }
      Dictionary updatedProperties=new Properties();
      Enumeration keyEnumeration=configAdminProperties.keys();
      while (keyEnumeration.hasMoreElements()) {
        String key=(String)keyEnumeration.nextElement();
        String value=(String)configAdminProperties.get(key);
        if (key.startsWith(sourceGroupName)) {
          String newKey=key.replace(sourceGroupName,targetGroupName);
          updatedProperties.put(newKey,value);
          sourceGropConfig.put(key,value);
        }
        updatedProperties.put(key,value);
      }
      conf.update(updatedProperties);
    }
  }
 catch (  IOException e) {
    LOGGER.error("String_Node_Str",e);
  }
}

Fixed version (ground truth):
/** 
 * Copy the configuration of a cluster   {@link Group}. <b>1.</b> Updates configuration admin from Hazelcast using source config. <b>2.</b> Creates target configuration both on Hazelcast and configuration admin.
 * @param sourceGroupName the source cluster group.
 * @param targetGroupName the target cluster group.
 */
public void copyGroupConfiguration(String sourceGroupName,String targetGroupName){
  try {
    Configuration conf=configurationAdmin.getConfiguration(Configurations.GROUP,null);
    if (conf != null) {
      Dictionary configAdminProperties=conf.getProperties();
      if (configAdminProperties == null) {
        configAdminProperties=new Properties();
      }
      Map<String,String> sourceGroupConfig=instance.getMap(GROUPS_CONFIG);
      for (      Map.Entry<String,String> parentEntry : sourceGroupConfig.entrySet()) {
        configAdminProperties.put(parentEntry.getKey(),parentEntry.getValue());
      }
      Dictionary updatedProperties=new Properties();
      Enumeration keyEnumeration=configAdminProperties.keys();
      while (keyEnumeration.hasMoreElements()) {
        String key=(String)keyEnumeration.nextElement();
        String value=configAdminProperties.get(key).toString();
        if (key.startsWith(sourceGroupName)) {
          String newKey=key.replace(sourceGroupName,targetGroupName);
          updatedProperties.put(newKey,value);
          sourceGroupConfig.put(key,value);
        }
        updatedProperties.put(key,value);
      }
      conf.update(updatedProperties);
    }
  }
 catch (  IOException e) {
    LOGGER.error("String_Node_Str",e);
  }
}