I have a few webinars scheduled and collecting registrations using my GoToWebinar form for the next few months. I recently connected GoToWebinar to Marketo through Launchpoint and connected these webinars to programs (because we're going to run follow up, etc through Marketo from now on). The connection did not "bring down" the registrants from GoToWebinar - it's showing 0 members. Support confirmed that we can't sync those people from GoToWebinar to Marketo because they used the GoToWebinar form, not a Marketo form.
Has anyone dealt with this before? All I can think of is a list upload of their information and marking them as "Registered" for my event, but if I do that, will GoToWebinar recognize them after the event when it marks them "Attended" or "No Show" or will it create duplicates?