Using SynchIt version 3.4.1653 with Action=Synchronize, I see a problem with the FileDateTimes inside $7list7$.txt on the FTP server.
Sometimes the list file processing works perfectly: SynchIt shows the remote file's DateTime as recorded in the list file.
Sometimes the list file processing does not work correctly: SynchIt shows the remote file's Last-Modified DateTime as recorded in the remote file system, not what's in the list file.
It seems the list file processing is more reliable in folders without a space in the name, and less reliable in folders with a space in the name.
On both first upload and upload with overwrite, remote file's DateTime: remote filesystem has Upload-Date and list file has local file's DateTime; SynchIt shows Upload-Date. Again, this is only under folders with a space in the name.