Backups / updrage-edgelinux

The docs for the edgelinux upgrades reference backups, that the process will make one,
that I should keep 3, and I should delete only after success upgrade.
I have success.  Where is the backup though?  I can't find it.

Is there any info on managing the backups - sorry if I missed the FAQ.

s

My backups were in:

/antlets/_edgeLinux-workspace

But the docs say to call support if you need to restore from them