WinSCP cannot do this for you. This is a way too specific request.
You can use synchronize -preview mode with enabled XML logging. Then process the XML log to find a files to be replaced and rename them. Only after that, execute the actual synchronization.

1. congratulations, app is great! :)

2. Now about my problem :)

I would like to create a script which will be not erase old files but change them names.
What I mean? Example

a) On HDD I have a file


b) script upload file to FTP

c) on HDD file.doc is change.

>> d) on FTP script change name from file.doc to file%date%.doc (or something like that)

e) than from HDD upload file.doc to FTP


Now, my script looks like this:

But script replace old files on FTP (delete old files, but it could just change names)

Is it possible to do something like this?

Thanks.