Currently you have to select the map you want to upload via "Browse" from the local file system. This is problematic if you use a dedicted server without a UI and web browser. Right now I would have to download my two maps (800MB & 500MB) and then upload them from my local machine which takes forever.
My suggestion would be the following:
Make it possible to enter an http:// address and the upload functions downloads the .zip file from this URL. Of course do not remove browsing for a local file Wink