Title says it all really.
Any changes made to configuration.yaml in the folder ~/umbrel/app-data/home-assistant/ are wiped each time the Umbrel node is restarted.
And any text added to configuration.yaml in the sub-folder ~/umbrel/app-data/home-assistant/data are ignored by Home Assistant.
Can anyone point me towards some info about what the proper procedure is re: configuration.yaml? Many thanks, D