In WB < 2.0 the copy command is a bit picky about its parameters. To copy a directory recursively, you specify the directory and not its contents.
So the correct command line is
copy dh0: dh1: all clone quiet
and not dh0:#?.
I'm not certain that just pre-2.0 Copy that's persnickety. ISTR having similar results later. The device-only syntax is what I've always used successfully from 1.3 to 3.9 when copying full drives via the CLI.
