Bug 42690 Loading .importorder file fails when package prefix entry starts with an uppercase letter [code manipulation]
After saving my manually configured import order definition in the organize imports preferences page, I can't load it again ( Error Box: Not a valid import order file). The reason seems to be the existence of package prefix entrys which start with an uppercase letter.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/ImportOrganizePreferencePage.java
}
			} catch (IOException e) {
				JavaPlugin.log(e);
			} finally {
				if (fis != null) {
					try { fis.close(); } catch (IOException e) {}
				}
			}
			String title= PreferencesMessages.getString("ImportOrganizePreferencePage.loadDialog.error.title"); 
			String message= PreferencesMessages.getString("ImportOrganizePreferencePage.loadDialog.error.message"); 
			MessageDialog.openError(getShell(), title, message);
		}
		return null;
	}
	
	private void saveImportOrder(List elements) {
		FileDialog dialog= new FileDialog(getShell(), SWT.SAVE);
		dialog.setText(PreferencesMessages.getString("ImportOrganizePreferencePage.saveDialog.title")); )
		dialog.setFilterExtensions(new String[] {"*.importorder", "*.*"}); 
		dialog.setFileName("example.importorder"); 
		String lastPath= getPreferenceStore().getString(PREF_LASTSAVEPATH);
		if (lastPath != null) {
			dialog.setFilterPath(lastPath);
		}
		String fileName= dialog.open();
		if (fileName != null) {
			getPreferenceStore().putValue(PREF_LASTSAVEPATH, dialog.getFilterPath());
			
			Properties properties= new Properties();
			for (int i= 0; i < elements.size(); i++) {