What Is Not Supported:

The new date formats are not supported in date ranges in file-handling commands. You can use @DATECONV[newdate,4] within a date range to convert the new date formats into something TCC understands.

The internal @FILEDATE function has not been replaced, as I have no foolproof way to get date stamp info for FTP files. If needed, you can massage @FILEDATE’s output with @DATECONV.