Bug 176436 Charts Imported from Libraries do not update when libraries change
During a live presentation of BIRT at EclipseCon, we came across a rather embarassing issue. When charts are included in a library, and imported into a report design from a library, any changes to the library instance of the chart do not reflect in the report itself.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/SimpleGroupElementHandle.java
if ( propertyHandle != null && propertyHandle.isReadOnly( )
					|| propertyHandle == null )
				return true;
		}
		
		
		return needHide( propName );
	}
	/**
	 * Returns if the property need to be hiden under some cases.
	 * 
	 * @param propName
	 *            the property name to check
	 * 
	 * @return true if the property need to be hiden under some cases, false
	 *         otherwise.
	 */
	private boolean needHide( String propName )
	{
		if ( !( IReportItemModel.BOOKMARK_PROP.equals( propName )
				|| IReportItemModel.TOC_PROP.equals( propName )
				|| IStyleModel.PAGE_BREAK_AFTER_PROP.equals( propName )
				|| IStyleModel.PAGE_BREAK_BEFORE_PROP.equals( propName )
				|| IStyleModel.PAGE_BREAK_INSIDE_PROP.equals( propName ) 
				|| ICellModel.DROP_PROP
				.equals( propName ) ) )
			return false;
		for ( int i = 0; i < elements.size( ); i++ )