This week, a month after making my story map cascade public, one of the immersive sections disappeared. The section had media (ArcGIS map, also public, created in arcgis.com) and photos (web-linked and CC photos (properly attributed), or my photos). All worked fine for one month. I recreated the missing section and saved the story map with no problem today. I had also set the ArcGIS maps and the story map itself to prevent auto-delete. How do I prevent sections from disappearing again? Thank you!