Project page and song version do not realy work together. If new version is used, project points to a non-existing file, as those are moved to history folder. Means, you can not use versions and project page together.
The real issue I have is to keep old versions as backups. But using latest version in project. But as soon I use "save new version", project is broken.
If I use the manual way to save a song-file by counting e.g. test01, test02 and so on, I can also not update the project master file with latest version.
However, using project and versions does not work at the moment and to easy update the mastering file seems not to be possible.