Sorry, I missed a setting - USB Port Link to [REMOTE]
That greys ot the next two settings, but I have used Unlink to [REMOTE] with
CI-V Baud Rate 19200
CI-V Echo Back OFF

It works with both settings, as I said in my original reply, some contest logging programs need Transceive off and Unlink to [REMOTE] but WSJT-X doesn't seem to miind which way round it's set.