We recommend using WP All Import plugin and import previously created listings to our theme.
It simplifies the whole bulk – listings process, and it gives you a helping hand so that you get the job done.
Learn how to use WP All Import’s drag & drop interface to your XML or CSV file:
Here you can also check the user guide & documentation.
As for exporting listings, you can use WP All Export plugin.
It is important to make some tests and understand how to map the fields correctly.