If an archive (example.war) is deployed to a domain, and a deploy command is run to deploy to a server group that does not currently have the archive in it, the message indicates a successful deployment, but the archive is not added to the server group.

Steps: Create two server groups.
run a deploy command from CLI.
deploy example.war --force --server-groups=server-group-1
notice it is now deployed to all servers in server-group-1
run a deploy command to deploy the same archive to server-group-2
deploy example.war --force --server-groups=server-group-2

You get the message "'example.war' re-deployed successfully."

However, when you attempt to hit any nodes in server-group-2, the application is not deployed.