Bug 142928 Item from library is changed to a report design item after revert to report item
Details: Item from library is changed to a report design item after revert to report item. Setp: 1.New a template. 2.Use a libary contain a label. 3.Drop the label from library explorer into layout. 4.Change the label to template item. 5.Revert the template item to report item. Actual result: The label is become a report item, but a item from library. Please see the attach image. Exception result: The lable is revert a item from library.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DesignElementHandle.java
*/
	public long getID( )
	{
		return getElement( ).getID( );
	}
	/**
	 * Returns the element factory for creating new report elements. After
	 * creating the element, add it to the design by calling the the
	 * <code>{@link SlotHandle#add( DesignElementHandle ) add}</code> method
	 * of the slot handle that represents the point in the design where the new
	 * element should appear.
	 * 
	 * @return a handle to the new element.
	 * @see SlotHandle
	 */
	public ElementFactory getElementFactory( )
	{
		return new ElementFactory( module );
	}
	/**
	 * Returns a property handle for a top-level property. A top-level property
	 * is a property that defines on an element.
	 * 
	 * @param propName
	 *            the name of the property to get
	 * @return The property handle, or <code>null</code> if the no property
	 *         exists with the given name.
	 * @see PropertyHandle
	 */
	public PropertyHandle getPropertyHandle( String propName )