Hello Mary,
Thanks for reaching out!
Courses in Review 360 are already in their published version and there's no way to convert them back to an editable Storyline 360 .STORY project file. You'll need to locate the original files if you'd like to edit and republish them.
We also released a feature back in October 2023 called Cloud Backup which will allow you to upload a copy of your project files to Review 360 as a way to back them up online. Chances are your colleague never saw the release of this feature, but its worth checking if you need a place to backup your files moving forward.
