A feature provided in the Professional level service is a CSV export of locations via the Location Manager page.
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This process is being revised so that export bulk action works more like a single page application.
Also see the Bulk Action processor page.
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The process flow for the Locations : Export CSV…
The process starts with a standard form submit from the Bulk Actions “Apply” button.
WordPress sets up a JavaScript variable location_import that has info about the action “export”.
This triggers a jQuery(document).ready() call that fires another request via AJAX back to WordPress with some new parameters in place.
That AJAX call eventually sends back a CSV file that is stored in a DOM div that was prepared with the jQuery() document loader when the refreshed page (post original submit) was rendered.