You can choose to trigger a full indexing of all indexed types or just one type, and you can choose to do this for your Development database ("test"), Live database, or both. Note that doing a full indexing could take noticeable capacity over a period of time (depending on how many things there are), so the recommendation is to trigger a full indexing once after adjusting all your data types’ settings, and to do it at non-peak hours. Behind-the-scenes, the full indexing runs the same process as a large CSV data export, so you can actually see the status of these tasks in App Data > Export.