Some of our webinars are done through a portion of our company that does not natively sync with Marketo. So, what we do is when they send us the registration list, I upload that list into the event. Then I run a campaign to change the program status to show as Registered for everyone on that list. Then when we get the attendees, I upload them into a different list and run another campaign to change the program status to show as Attended for the event. We actually go 1 step further and anyone who was still at registered once that is done, we run a campaign to show as No Show for the webinar. That way we go through the same steps as if the webinar was synced through GTW, but we use list imports.