How to append files using winSCP 4.3.3

Hi,

How I can append new file from local directory to existing file in remote server during file transfer(uploading).

Thanks

First, you should upgrade.

Second, supposing the files have different names:
- Select the local file
- Go to File(s) > Copy
- In the "copy the ... to remote directory", change *.* to the name of existing remote file
- Confirm
- You should get overwrite confirmation prompt. Select Append.

The above may not work with some protocols/servers.