Steps:
1) Deploy something by copying an archive to the standalone/deployments directory.
2) Using the CLI or Console, remove the deployment.
i.e. /deployment=mywar.war/:remove

The deployment will stop, but the .war file and .deployed marker remain on the file system. When you restart the server, mywar.war will deploy again.

The problem is that "remove" doesn't really remove. It only stops the deployment until the next full restart. If you try to do some other operation on the deployment you will get a NoSuchElementException.

And from the file system, it looks like the deployment is still deployed.

So we need to do something to fully "remove" the deployment. Perhaps we need (yet another) marker file called .removed