You're not the only one. I had a routine that did sunrise/sunset and
that's not available anymore. Between stuff like this and the inability
to support Plex, I'm ready to ditch Google.
I'm sorry for your loss, but I believe the most expedient way to
transfer the devices over is probably going to be a factory reset.
https://support.google.com/googlenest/answer/7073477?hl=en#zippy=%2Cgoogle-nest-hub-max