I assume you spelled it wrong and meant user data, as in the User note 1 to 5. In all tests I have done, when I edit them the data is persistent. Ie, it's there when I reload. Am I misunderstanding? Did you press the save-button after editing?
The columns are orderable. Though I have seen once that it broke, I then reloaded and it worked. If you find out what breaks it, we would be interested.