In order to update a project you do not have to create a new project entry. You can use your old one and simply replace your previous version. Just go back to the “Creation” tab, do your updates on your existing project and then save it again (as .vrprj file). Then, switch to the “Publishing” tab and from your list of uploaded projects, choose your old project entry by clicking on the little edit icon on the right side. Your old project entry will open again with your old links. Then, simply click on the “Upload” button again and upload your new project file. After it is done uploading, the new version is attached to the project entry but it did not yet replace your previous version. Only when you click on “Publish” again, the version will be replaced by your new one.