does anyone know what I need to do to re-generate whatever id its using there?

I just cloned a disk that contained /var/lib/docker and attached it to another VM. I'm trying to have it join the same docker swarm that the node i copied it from is in, but it seems like there is some kind of id number that came with it, so when I bring up the new node it takes the same slot as the old worker.. does anyone know what I need to do to re-generate whatever id its using there?