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.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/BindingDialogHelper.java
if ( computedColumn.getAggregateFunction( ) == null
									|| computedColumn.getAggregateFunction( )
											.equals( "" ) )
								continue;
						}
						else
						{
							if ( computedColumn.getAggregateFunction( ) != null
									&& !computedColumn.getAggregateFunction( )
											.equals( "" ) )
								continue;
						}
						cmbName.add( computedColumn.getName( ) );
					}
				}
				else
				{
					setDisplayName( getBinding( ).getDisplayName( ) );
					for ( int i = 0; i < DATA_TYPE_CHOICES.length; i++ )
					{
						if ( DATA_TYPE_CHOICES[i].getName( )
								.equals( getBinding( ).getDataType( ) ) )
						{
							setTypeSelect( DATA_TYPE_CHOICES[i].getDisplayName( ) );
							break;
						}
					}
					setDataFieldExpression( getBinding( ).getExpression( ) );
				}
			}