I am tasked with updating an online course created in Articulate 2 (which was working fine). We have learners to successfully complete the course in Storyline 2. Now that updates are due on the content and having to update in Articulate 3, the content has disappeared to this black screen (see attached). Please provide any insights about how to keep the initial course intact. If we need to revert back to Articulate 2, we need to know this as soon as possible. Thanks!