CuteFTP Mac does not change the file size and date information supplied by the FTP server. A remote file's size and date are sent to CuteFTP Mac from the FTP server, and CuteFTP Mac simply relays this information to you. The server may report a file as having a different size or date, but it is very likely that the file is indeed the same as the one on your local drive, only it is being reported as having a different size or date by the server. This issue is most common when transferring files to a server that uses a different operating system (Linux, Windows, Sun servers) or is in a different time zone. To be sure, try downloading the file from the FTP server. The file should be exactly the way you sent it to the server. If it is not, you will need to contact the administrator of the server in order to resolve the issue.