Hey Paul,
Thank you for reaching out. I’m not sure where you heard or read that the CSV import functionality was removed, but I can assure you it is still available! If you visit Events > Import, you’ll see the option to import events, venues, and organizers using .CSV files. (see screenshot below)

Please let me know if you have any more questions and if you need assistance, I encourage you to create a new thread on our WordPress.org plugin page and we’d be happy to help troubleshoot any issues you have. Lastly, if you remember where you read this functionality was removed, please share a link with me.
Thanks again and have a great week ahead. Cheers!