I was looking for a process and tried this. Clonezilla gives a warning that it cannot be used to clone a larger disk to a smaller one. I tried anyhow and it say disk was out of space. 19G on a 70G disk trying to move to a 25G disk. No go.
Yes, the only line in that file is abi <abi/3.0>,
You can reload apparmor, but I would reboot if it seems to not be doing anything. Not sure what you are using for a router, but you may have a short lease time set which is causing proxmox to...