Bug 148761 Unable to copy a report item from template to report
Steps: 1. Create a template, add a Text item "t1" or others 2. Create template item using "t1" 3. Double click the template item and we get a report item again. 4. We copy the item, paste to another report file. Expected: the text item can be copied. Actual result: Nothing happened, not copied and no error msg.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/util/ModelUtil.java
* <ul>
	 * <li>EXTENSION_ID_PROP for Oda elements.
	 * <li>EXTENSION_NAME_PROP for extension elements like chart.
	 * </ul>
	 * 
	 * @param source
	 *            handle of the source element
	 * @param destination
	 *            handle of the destination element
	 */
	private static void duplicateExtensionIdentifier(
			DesignElementHandle source, DesignElementHandle destination )
	{
		
		
		
		if ( source.getElement( ) instanceof IOdaExtendableElementModel )
		{
			String extensionId = (String) source
					.getProperty( IOdaExtendableElementModel.EXTENSION_ID_PROP );
			destination.getElement( ).setProperty(
					IOdaExtendableElementModel.EXTENSION_ID_PROP, extensionId );
		}
		else
		if ( source.getElement( ) instanceof IExtendedItemModel )
		{
			String extensionId = (String) source
					.getProperty( IExtendedItemModel.EXTENSION_NAME_PROP );
			destination.getElement( ).setProperty(
					IExtendedItemModel.EXTENSION_NAME_PROP, extensionId );