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
boolean displayWarning = false;
		for (int i = 0; i < projects.length; i++) {
			if(projects[i].hasConflicts) {
				displayWarning = true;
				projectsList.setGrayed(projects[i], true);
			}else {
				projectsList.setChecked(projects[i], true);
			}
		}
		
		if (displayWarning) {
			setMessage(
					DataTransferMessages.WizardProjectsImportPage_projectsInWorkspace,
					WARNING);
		} else {
			setMessage(DataTransferMessages.WizardProjectsImportPage_ImportProjectsDescription);
		}
		setPageComplete(projectsList.getCheckedElements().length > 0);
		if(selectedProjects.length == 0) {
			setMessage(
					DataTransferMessages.WizardProjectsImportPage_noProjectsToImport,
					WARNING);
		}
	}
	/**
	 * Answer a handle to the zip file currently specified as being the source.
	 * Return null if this file does not exist or is not of valid format.
	 */
	private ZipFile getSpecifiedZipSourceFile(String fileName) {
		if (fileName.length() == 0) {