Hi there Laura,
Thanks for getting in touch with us, and sorry to hear you are moving away from our products 🙁
To export events data you can use default WordPress Export tool as explained in this article → Using WordPress Export Tools to Migrate Events Content. You can also a third party plugin like WP CSV to do this.
I’m not familiarized with Events Manager plugin, so not sure which importing methods they have available.
Please let me know if I can be of further help,
Best,
Nico
PS: if you want to give us some feedback on why you chose to switch event plugins I’d appreciate.