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
| GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL));
		createProjectsRoot(workArea);
		createProjectsList(workArea);
		createOptionsArea(workArea);
		createWorkingSetGroup(workArea);
		restoreWidgetValues();
		Dialog.applyDialogFont(workArea);
	}
	/**
	 * @param workArea
	 */
	private void createWorkingSetGroup(Composite workArea) {
		String[] workingSetIds = new String[] {"org.eclipse.ui.resourceWorkingSetPage",  
				"org.eclipse.jdt.ui.JavaWorkingSetPage"};  
		workingSetGroup = new WorkingSetGroup(workArea, currentSelection, workingSetIds);
	}
	/**
	 * Create the area with the extra options.
	 * 
	 * @param workArea
	 */
	private void createOptionsArea(Composite workArea) {
		Composite optionsGroup = new Composite(workArea, SWT.NONE);
		optionsGroup.setLayout(new GridLayout());
		optionsGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
		copyCheckbox = new Button(optionsGroup, SWT.CHECK);
		copyCheckbox
				.setText(DataTransferMessages.WizardProjectsImportPage_CopyProjectsIntoWorkspace);
		copyCheckbox.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
		copyCheckbox.addSelectionListener(new SelectionAdapter() {