Bug 198270 Copying an aggregate does not make a copy, only a reference
In a table with groups or multiple columns, create an aggregate in a footer or a header. Copy the aggregate to another cell in a footer or a header. Make changes to the new aggregate appropriate to its new location. Expected result: The changes appear in only the new copy of the aggregate. Actual result: The changes appear in both aggregates because the new aggregate is not a copy, but a reference to the same aggregate as the original.
xtab/org.eclipse.birt.report.item.crosstab.ui/src/org/eclipse/birt/report/item/crosstab/internal/ui/dialogs/CrosstabBindingDialogHelper.java
}
	private List getCrosstabViewHandleLevels( CrosstabReportItemHandle xtab,
			int type )
	{
		List levelList = new ArrayList( );
		CrosstabViewHandle viewHandle = xtab.getCrosstabView( type );
		if ( viewHandle != null )
		{
			int dimensions = viewHandle.getDimensionCount( );
			for ( int i = 0; i < dimensions; i++ )
			{
				DimensionViewHandle dimension = viewHandle.getDimension( i );
				int levels = dimension.getLevelCount( );
				for ( int j = 0; j < levels; j++ )
				{
					LevelViewHandle level = dimension.getLevel( j );
					levelList.add( level.getCubeLevel( ).getFullName( ) );
				}
			}
		}
		return levelList;
	}
	private void initFilter( )
	{
		if ( binding != null && binding.getFilterExpression( ) != null )
		{
			txtFilter.setText( binding.getFilterExpression( ) );
		}
	}
	private void initFunction( )