I have an issue with Debian multiboot environments which reuse SWAP-partitions. As a default option, each installation "formats" the SWAP partition (if SWAP partitions are used) as far as I understand. This changes the UUID of the SWAP partition(s). In /etc/fstab, the UUID of the SWAP partitions is referenced as a constant. In other existing installations, the old UUID of the SWAP partition (overwritten by the new installation) is no valid or found during boot (systemd timeout).
Shouldn't we preserve a UUID of an existing SWAP-partition?
Distro: Debian stretch