Queue not transferring latest copy of file.

I'm using version 2.0.998.26. The ftp server is a Microsoft Windows FTP server.

I noticed a problem with the queue in the following situation:
1. I have queue transfers turned on
2. I transfer a file to the remote ftp site. The file gets put in the queue and then gets transferred.
3. I modify the local file and save it.
4. I then transfer the same file to the remote site via the queue. Seemingly the file uploads fine without issues.
5. I view the remote file and it is still the old version previous to my modification.

If I turn off the queue transfers and use direct transfers, I don't have this problem?

Is there a setting that I need to know about or is this a real bug?