open command not working in script, but works in console.

I am on a Windows 10 Pro machine:
I cd to WinSCP directory and type in the following command:

>WinSCP.com /script=C:\Users\artr\Documents\ReceiveTEST.txt

The script contains the following code:

option echo on
option batch on
option confirm on
open TESTTran/myTest
lcd T:\TESTRECV
put -nopermissions -nopreservetime *.DAT
exit

I get the Host prompt twice and then it exits the script, as follows:

echo on
option batch on
batch on
reconnecttime 120
option confirm on
confirm on
open
Host:
Host:

However when I type in the WinSCP command:
>WinSCP.com

I am able to execute the open command as it is in the script directly:
winscp> open TESTTran/myTest
Searching for host...
Connecting to host...
Authenticating...
Using username "xxxxxx".
Authenticating with public key "xxxxxx".
Authenticated.
Starting the session...
Session started.
Active session: [1] TESTTran/myTest
winscp>

I am then able to execute the other commands in the script.

Why is the script not working?

Please attach a full session log files from both tests.