Eventbrite and Zoom Events Summit

We have our free event listed on Eventbrite and would like to use a Zoom Events Summit for our actual event. Eventbrite does not allow for integration with anything other than Zoom Webinars (and you cannot integrate with Events).

I am looking for a way to import registrants from Eventbrite into a Zoom Summit, yet cannot find a way to do so. Is it possible to manually maintain Summit registrants for a free event? If so, how?

I'd like to be able to download a CSV of registrants from Eventbrite and import them as attendees into the Summit. We looked at Zapier integration, yet it appears that we can only add attendees to a single webinar that is part of the Summit rather than to the entire Summit.

Have others tried this or similar?