Currently when I download the the data all the event data is put into a .csv and really I only need data from one event so each time I have to delete the data I am not using. It would be nice to have some filters and be able to download all the info for just one event as well.
If you click the "registrants" button on the dashboard, there's a dropdown on that page to filter by event. Then once you get the participants, you can click the export button there instead, which sounds like what you need.