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
}
		} );
		remove = new Button( buttonBar, SWT.PUSH );
		remove.setText( "<" ); 
		remove.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		remove.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				removeSelected( );
			}
		} );
		removeAll = new Button( buttonBar, SWT.PUSH );
		removeAll.setText( "<<" ); 
		removeAll.setLayoutData( new GridData( GridData.FILL_VERTICAL
				| GridData.VERTICAL_ALIGN_BEGINNING
				| GridData.FILL_HORIZONTAL ) );
		removeAll.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				removeAll( );
			}
		} );
		selectedList = new List( selectionArea, SWT.MULTI
				| SWT.BORDER
				| SWT.V_SCROLL
				| SWT.H_SCROLL );
		setListLayoutData( selectedList );
		selectedList.addSelectionListener( new SelectionListener( ) {
			public void widgetDefaultSelected( SelectionEvent e )
			{