Import option not available in recurring zoom webinar

Just read somewhere that it's not possible to import registrants to a recurring webinar. Super frustrating.

My solution is to could go to the webinar I already have set up and make it a recurring webinar, but I don't want people to get a confirmation email again. It will just confuse them. We'll be sending out emails closer to the event.

So for now, I turned off "send invitations/confirmations." If I proceed with changing the webinar to be a recurring one, will they be notified (even if I have the email notifications turned off)? Below is the message that is shown just before saving my edits, and the message makes me nervous... Will all of my current registrants actually be removed? And then I'm stuck with not being able to import them again. If they're not removed, great. And I'm assuming that when I turn the email reminders back on after making this change, they'll still get the updated link. 

[ checkbox] Require participants who have already registered for this webinar to register again


It really shouldn't have to be this difficult!! GoToWebinar had this figured out.