Files keep temp name when using CMD

I have set every possible GUI option to not use temp file names.
And use a CMD script with
But every time it arrives at the FTP site it has a name that looks like
Am I missing a setting somewhere or script cmd?

WinSCP adds .filepart extension to the very end of the file name. It's also adding the extension with SFTP only, not with FTP. Are you sure it's WinSCP adding the extension, and not the server? Post a session log file.
Also, if should be -resumesupport=off, not -resumesupport-off.

Sorry I did have the =off correct in the script I just typed it wrong here.
You can see in the log file it doing some weird stuff with the file name.

The file name ends up being this when it posts to the server

The log does not show any file transfer.