Hi there, Gilles! Thanks for getting in touch. 🙂
Great question but, unfortunately, the WooTickets add on does not support importing tickets from a CSV file.
All tickets you create are registered as Products in WooCommerce. I see there is a CSV importer for WooCommerce products that might interest you. However, that still wouldn’t create an association with the event and the ticket that is imported.
I’m sorry that’s probably not the answer you were hoping for, but does it at least help? Please let me know.
Cheers!
Geoff