David, sorry if I'm assigning to the wrong person. I guess this could be a CLI bug.

[standalone@localhost:9999 /] cd subsystem=logging/async-handler=ASYNC
[standalone@localhost:9999 async-handler=ASYNC] :read-resource(recursive=true)
{
"outcome" => "success",
"result" =>

{ "level" => "INFO", "overflow-action" => "BLOCK", "queue-length" => 1024, "subhandlers" => ["FILE"] }
}
[standalone@localhost:9999 async-handler=ASYNC] :update-properties(subhandlers=["CONSOLE"]) {"outcome" => "success"}
[standalone@localhost:9999 async-handler=ASYNC] :read-resource(recursive=true)
{
"outcome" => "success",
"result" => { "level" => "INFO", "overflow-action" => "BLOCK", "queue-length" => 1024, "subhandlers" => ["FILE"] }

}