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
*             if the target element is not in the same report as this
	 *             element.
	 */
	public void copyPropertyTo( String propName,
			DesignElementHandle targetHandle ) throws SemanticException
	{
		assert ( targetHandle.getModule( ) == getModule( ) );
		if ( targetHandle.getModule( ) != getModule( ) )
			throw new IllegalArgumentException(
					"The target element should be in the same report !" ); 
		if ( targetHandle.getDefn( ) != getDefn( ) )
			throw new PropertyValueException(
					targetHandle.getDefn( ).getName( ),
					PropertyValueException.DESIGN_EXCEPTION_WRONG_ELEMENT_TYPE,
					PropertyType.ELEMENT_REF_TYPE );
		PropertyDefn propDefn = (ElementPropertyDefn) getDefn( ).getProperty(
				propName );
		if ( propDefn == null )
			throw new PropertyNameException( getElement( ), propName );
		propDefn = (ElementPropertyDefn) targetHandle.getDefn( ).getProperty(
				propName );
		if ( propDefn == null )
			throw new PropertyNameException( targetHandle.getElement( ),
					propName );
		Object value = getElement( ).getLocalProperty( module,
				propDefn.getName( ) );
		if ( value == null )
		{
			targetHandle.setProperty( propName, null );
			return;