Bug 168808 Display text is lost after launching import values dialog
Steps to reproduce: 1.new a parameter; 2.select list box control type; 3.press "Import Values" button to import some values; 4.assign display texts for the imported values; 5.press "Import Values" button to launch import values dialog again; 6.press ok button on dialog; Expected result: The previous assigned display texts are remained. Actual result: The previous display texts are lost.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/ImportValueDialog.java
addSelected( );
			}
			public void widgetSelected( SelectionEvent e )
			{
				updateButtons( );
			}
		} );
		Composite buttonBar = new Composite( selectionArea, SWT.NONE );
		GridLayout layout = UIUtil.createGridLayoutWithoutMargin( );
		
		buttonBar.setLayout( layout );
		
		addAll = new Button( buttonBar, SWT.PUSH );
		addAll.setText( ">>" ); 
		addAll.setLayoutData( new GridData( GridData.FILL_VERTICAL
				| GridData.VERTICAL_ALIGN_END
				| GridData.FILL_HORIZONTAL ) );
		addAll.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				addAll( );
			}
		} );
		add = new Button( buttonBar, SWT.PUSH );
		add.setText( ">" ); 
		add.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		add.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				addSelected( );