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Scene services will need an underlying source package related to the item in order to back up as a hosted scene service, otherwise Backup My Org will treat it as a registered service pointing to the original file if the source package is unavailable.
Instant Apps:
There are a few variants of Instant Apps that will not restore when moving content from one ArcGIS Organization to another that is an earlier version. This is due to changes in the Apps' underlying data structure.
3D Viewer
Chart Viewer
Exhibit
Inset
For more information about Backup My Org, including supported items and system requirements, please see our product page.
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