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 void revertToReportItem( ) throws SemanticException
	{
		clearProperty( REF_TEMPLATE_PARAMETER_PROP );
	}
	/**
	 * Checks whether this element is based on a template parameter definition
	 * or not. Call this method before calling method
	 * {@link #revertToTemplate(String) }to assure that this element can be
	 * reverted to a template element. If this method returns false, method
	 * <code>revertToTemplate(String)</code> must fail too.
	 * 
	 * @return true if this element is based on a template parameter definition,
	 *         otherwise false
	 */
	public boolean isTemplateParameterValue( )
	{
		return getElement( ).isTemplateParameterValue( getModule( ) );
	}
	/**
	 * Gets the property data for either a system-defined or user-defined
	 * property.
	 * 
	 * @param propName
	 *            The name of the property to lookup.
	 * @return The property definition, or null, if the property is undefined.
	 */
	public IElementPropertyDefn getPropertyDefn( String propName )
	{