Hey @Pim,
There is unfortunately not a way to import all of that information intact 🙁
You can import the events for sure, but importing the Tickets accurately and having the Tickets link to events correctly is tricky, and we currently have no way to do this at this time.
One method that MIGHT work, however, and is worth testing on a test site first would be to use the default WordPress importer plugin here:
• https://wordpress.org/plugins/wordpress-importer/
Then basically, run through the following steps:
1. Go to Tools > Export in your first site’s wp-admin. Export all Events, then all “Products”, then you can also do Venues and Organizers if you’d like.
2. On the site where you want to replicate this data, use the aforementioned “Importer” plugin to import the files you exported in step #1 onto your new site.
3. See if things work – there is a chance they will, as these files include all of the post meta data which is what is needed for Tickets and Events to be linked together, but I need to be clear that this is just a possibility, and likely will not work 100% 🙁
—
Finally, one thing that might be the best solution is to get down and dirty with a full-on database transfer. We’re not able to provide much insight on that, but you can read about it in many places online and there are even some plugins that enable that sort of transfer, like the famous WP Migrate DB plugin: https://wordpress.org/plugins/wp-migrate-db/
I hope this information helps at least a little bit 🙂
Cheers!
George