FTP/FTPS support for Append (APPE)

Could I ask if there is ever likely to be support for appending files via FTP/FTPS rather than just SFTP.

The APPE command for FTP has been defined in RFC 959 since 1985, so I assume there is a good reason for not supporting it.

I am needing to convert an old process to use WinSCP but must be able to append a file to avoid race conditions that could occur by download/append/upload.

Many thanks in advance.

Thanks for your suggestion.

I have added this issue to the tracker:
Issue 2378 – Append with FTP protocol
You can vote for it there.