Bug 330553 [Import/Export] Importing a project that exists in workspace location merges the contents
(1) Create a project in the default location (2) Export it to an archive (3) Delete it (but don't choose the option to delete from disk) (4) Make some changes in the <workspace root>/<project> directory (4) Import the archive you exported in step 2 This results in files from both the archive and directory. If the directory already has a file thats available in the archive, then it doesn't modify it. Ideally we shouldn't be allowing the import at all.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardProjectsImportPage.java
/**
	 * More (many more) parameters.
	 * 
	 * @param pageName
	 * @param initialPath
	 * @param currentSelection
	 * @since 3.5
	 */
	public WizardProjectsImportPage(String pageName,String initialPath,
			IStructuredSelection currentSelection) {
 		super(pageName);
		this.initialPath = initialPath;
		this.currentSelection = currentSelection;
		setPageComplete(false);
		setTitle(DataTransferMessages.WizardProjectsImportPage_ImportProjectsTitle);
		setDescription(DataTransferMessages.WizardProjectsImportPage_ImportProjectsDescription);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets
	 * .Composite)
	 */
	public void createControl(Composite parent) {
		initializeDialogUnits(parent);
		Composite workArea = new Composite(parent, SWT.NONE);
		setControl(workArea);
		workArea.setLayout(new GridLayout());
		workArea.setLayoutData(new GridData(GridData.FILL_BOTH