Hi. I upload new versions of files many times, but yesterday it was very wrong. New file created without any sence or license or naming.

1. Open Commons.
2. Find two existing files, X and Y, with the same extension (.svg in my case).
3. Download X to your computer (File:Moscow metro map sb.svg in my case).
4. Change the downloaded file name, for example to "Phabtest.<same extension>" (Metromap.svg in my case).
5. Upload it as a new version of Y (File:Moscow metro map sb draft.svg in my case).
6. Get a warning "You're trying to upload a copy of existing file".
7. Expected: Click on "Ignore warnings" and the new version uploads.
8. Got: A new file, "File:Phabtest.<same extension>" created, with one version and empty license (File:Metromap.svg in my case).

I saw this a couple of times yesterday. Creating a file with local computer name is bad enough, not talking about creating an irrelevant file. Thank you.