Keep on getting this 'Use Original' link, and it doesn't seem to like what I enter into technogloies. After that, I can't save (well, the save button is there but does nothing), and I loose my changes.
Mac 10.7.5, Chrome 26.0.1410.65
The purpose of the "Use Original" link is to restore the values from the original import (e.g. from GitHub, CodePlex, Bitbucket...) in case they have been overridden by the user.
So in your example, the project has originally been imported with Technologies =
Try: refresh page, edit technologies, ignore "Use Original" link, save. Does that fix the problem?