Recovering a deleted lesson

Hi Shawnda!

When deleting blocks or lessons, you'll see the Undo notification for 12 seconds with a timer indicator. However, once this disappears, the block or lesson can no longer be recovered.

One way to prevent this in the future is to create duplicates of your courses before editing the original course. We're also tracking requests for a feature for reverting to a previous version of the course, I'll keep you posted on any updates on this request.