In Configuration, File Exist is set to Ask but Overwrite prompt doesn't happen

In the configuration options for File Exist, I've got all set to Ask.

I drag and drop the selected files from local browser to remote FTP site folder, the files appear and in the Transfer Queue window and appear to be doing Connecting followed by Pre-transfer but don't get uploaded.

I have to delete the remote files first to get the upload to happen.

How do I get the uploading to work so that I can update the FTP site folder, without having to delete the remote files first and that it checks and asks for confirmation when the remote files exist?

same here,

I always have to delete the files on the remote server before I can upload them again. The files don't get overwritten automatically.