fptotem yeah, I still don't trust SeedVault enough to fully restore my phone. Sometimes backups are successful and other times they fail. I think when I get a new phone eventually I'll probably try to restore from SeedVault, but I don't have high expectations. If it doesn't work, I plan on restoring my old phone to my new phone bit by bit, by apps, photos, music, wallpapers, etc. I know that would take a lot longer, but it is what it is. I'll for sure give SeedVault a shot first though, who knows, maybe I'll be lucky and it will restore my entire phone. Maybe it won't. I have one bit of advice about Seedvault. Use SeedVault, create backups, and do what you can with it. Attempt to restore from SeedVault if you like. But don't have high expectations. Expect to download apps manually and transfer data from your old phone. Expect SeedVault to not always work properly. Most of all, enjoy using GrapheneOS no matter how annoying the backup/restore process is.
When I get a new phone (probably in a year or so, next November), I'll most likely create a thread on how the backup restore process went as a guide for others. :)