I’ve token another path: recreated profiles and file structure in my old server and did
lxd recover
After some struggling (see Error using lxd recover) I’ve been able to recover my old installation.
Now I’m facing some problems like no ip addresses in my containers (they were fixed ips, the dynamic ones are working)… let’s see what happens.
Anyway, it would be a good thing that lxd.migrate could work in all distros. At least if you are using Snap version of LXD.