Bug 85506 [Import/Export] [Preferences] import preference wizard uses a "save" dialog.
I20050215-2300 The import preferences wizard provides a browse button to select the file you wish to import from. However, it creates a Save As dialog. When you select the file you wish to import you are greeted with a warning that the file will be overwritten. No such thing occurrs, and otherwise the import succeeds.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/preferences/WizardPreferencesPage.java
button.setData(new Integer(id));
        button.setText(label);
        if (defaultButton) {
            Shell shell = parent.getShell();
            if (shell != null) {
                shell.setDefaultButton(button);
            }
            button.setFocus();
        }
        return button;
    }
    /**
     * Add the passed value to self's destination widget's history
     * 
     * @param value
     *            java.lang.String
     */
    protected void addDestinationItem(String value) {
        destinationNameField.add(value);
    }
    /**
     * (non-Javadoc) Method declared on IDialogPage.
     */
    public void createControl(Composite parent) {
        initializeDialogUnits(parent);
        Composite composite = new Composite(parent, SWT.NULL);
        composite.setLayout(new GridLayout());
        composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL
                | GridData.HORIZONTAL_ALIGN_FILL));
        composite.setFont(parent.getFont());