Bug 114665 [Import/Export] - Import existing projects into workspace - didn't copy files
I20051101-1204 (setup) - launch a runtime workspace - in that workspace, create a plug-in project called "Scratch". Accept all the defaults of the wizard and choose "Custom plug-in wizard" as the template - when the project has been created, quit the runtime workspace (bug) - now from the host workspace, choose import/export > import > existing projects into workspace - select the folder the contains the runtime workspace - you'll see "Scratch" in the list of projects - check the checkbox for "copy into workspace" - the project appears in the workspace as a java project, but it has no contents at all.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardProjectsImportPage.java
final String dotProject = IProjectDescription.DESCRIPTION_FILE_NAME;
		for (int i = 0; i < contents.length; i++) {
			File file = contents[i];
			if (file.isFile() && file.getName().equals(dotProject)) {
				files.add(file);
				
				
				return true;
			}
		}
		
		for (int i = 0; i < contents.length; i++) {
			if (contents[i].isDirectory())
				if (!contents[i].getName().equals(
						IDEApplication.METADATA_FOLDER))
					collectProjectFilesFromDirectory(files, contents[i],
							monitor);
		}
		return true;
	}
	/**
	 * Collect the list of .project files that are under directory into files.
	 * 
	 * @param files
	 * @param monitor
	 *            The monitor to report to
	 * @return boolean <code>true</code> if the operation was completed.
	 */
	private boolean collectProjectFilesFromProvider(Collection files,