kedit , kate , konqueror, modify files on remote computer

Hello, I posted some months ago this problem : When I want to modify some files with Konqueror and kedit, from a remote computer server on my local computer (sftp), the file is downloaded in a tmp trinity directory. When it is saved, I have to upload it to the server. This is a waste of time, if I must modify many files. If I use "kate" (instead kedit), I dont'have this problem. Strange, on my laptop, with * strictly * the same configuration than my workplace computer, kedit saves directly the files on the remote server. Not so important, kate is good, it's just to understand. Happy day, André