Program: 125487
Project: 125487
Buggy source:
@Override public Item copy(Item originalItem,IPath path,String newItemLabel) throws PersistenceException, BusinessException {
  Resource resource;
  ProjectManager projectManage=ProjectManager.getInstance();
  if (!projectManage.getProject(originalItem).equals(projectManage.getCurrentProject().getEmfProject())) {
    originalItem.getProperty().eResource().getContents().add(originalItem);
  }
  resource=originalItem.getProperty().eResource();
  ByteArrayOutputStream out=new ByteArrayOutputStream();
  try {
    resource.save(out,null);
    Resource createResource=new ResourceSetImpl().createResource(resource.getURI());
    ByteArrayInputStream in=new ByteArrayInputStream(out.toByteArray());
    createResource.load(in,null);
    Item newItem=null;
    if (newItemLabel == null) {
      boolean changeLabelWithCopyPrefix=true;
      newItem=copyFromResource(createResource,changeLabelWithCopyPrefix);
    }
 else {
      newItem=copyFromResource(createResource,newItemLabel);
    }
    copyReferenceFiles(originalItem,newItem);
    create(getRepositoryContext().getProject(),newItem,path);
    if (originalItem.eClass() == PropertiesPackage.Literals.PROCESS_ITEM || originalItem.eClass() == PropertiesPackage.Literals.JOBLET_PROCESS_ITEM) {
      xmiResourceManager.copyScreenshotFile(originalItem,newItem);
    }
 else {
      for (      IRepositoryContentHandler handler : RepositoryContentManager.getHandlers()) {
        handler.copyScreenShotFile(originalItem,newItem);
      }
    }
    if (newItem instanceof ConnectionItem) {
      ConnectionItem connectionItem=(ConnectionItem)newItem;
      Resource itemResource=xmiResourceManager.getItemResource(connectionItem);
      if (itemResource != null && itemResource instanceof XMLResource) {
        XMLResource xmlResource=(XMLResource)itemResource;
        xmlResource.setID(connectionItem.getConnection(),EcoreUtil.generateUUID());
      }
    }
    return newItem;
  }
 catch (  IOException e) {
    ExceptionHandler.process(e);
  }
  return null;
}

Fixed version (ground truth):
@Override public Item copy(Item originalItem,IPath path,String newItemLabel) throws PersistenceException, BusinessException {
  Resource resource;
  ProjectManager projectManage=ProjectManager.getInstance();
  if (!projectManage.getProject(originalItem).equals(projectManage.getCurrentProject().getEmfProject())) {
    originalItem.getProperty().eResource().getContents().add(originalItem);
  }
  resource=originalItem.getProperty().eResource();
  ByteArrayOutputStream out=new ByteArrayOutputStream();
  try {
    resource.save(out,null);
    Resource createResource=new ResourceSetImpl().createResource(resource.getURI());
    ByteArrayInputStream in=new ByteArrayInputStream(out.toByteArray());
    createResource.load(in,null);
    Item newItem=null;
    if (newItemLabel == null) {
      boolean changeLabelWithCopyPrefix=true;
      newItem=copyFromResource(createResource,changeLabelWithCopyPrefix);
    }
 else {
      newItem=copyFromResource(createResource,newItemLabel);
    }
    copyIcon(originalItem,newItem);
    copyReferenceFiles(originalItem,newItem);
    create(getRepositoryContext().getProject(),newItem,path);
    if (originalItem.eClass() == PropertiesPackage.Literals.PROCESS_ITEM || originalItem.eClass() == PropertiesPackage.Literals.JOBLET_PROCESS_ITEM) {
      xmiResourceManager.copyScreenshotFile(originalItem,newItem);
    }
 else {
      for (      IRepositoryContentHandler handler : RepositoryContentManager.getHandlers()) {
        handler.copyScreenShotFile(originalItem,newItem);
      }
    }
    if (newItem instanceof ConnectionItem) {
      ConnectionItem connectionItem=(ConnectionItem)newItem;
      Resource itemResource=xmiResourceManager.getItemResource(connectionItem);
      if (itemResource != null && itemResource instanceof XMLResource) {
        XMLResource xmlResource=(XMLResource)itemResource;
        xmlResource.setID(connectionItem.getConnection(),EcoreUtil.generateUUID());
      }
    }
    return newItem;
  }
 catch (  IOException e) {
    ExceptionHandler.process(e);
  }
  return null;
}