I saved my Cascade, but can't find it. Looked in My Content for AGOL and our organizational Portal.
If you created if from the Story Maps website then it should be in the home folder of My Content for whichever ArcGIS account you were signed in as when you launched the Cascade Builder.
If you have lots of items your story may be on a later page. Try browsing the items on later pages or sorting your items by date to bring the newest ones to the top of the list.
Retrieving data ...