Actually I can not remove several child scenes (I did remove references in Echo Skills, the only reference). Also web-ui fails when I attempt to remove Groups and Scenes 1.2 parent app.
When deleting I see the dialog that 47 child devices will be deleted however the delete operation silently fails... maybe I need to manually delete the 47 scene activators?
So lit is likely that this DB corruption and may be the cause of cron failing for devices and other apps.
Is there a way to backup and restore devices only? I understand that the soft-reload does not impact Zigbee or Zwave networks... however the devices require db backup/restore.