I'm fairly sure from some stuff I've read that Valhalla was replaced with Ageira, although they did use the Valhalla-One 'tome' or whatever to create the "Liberty engine", lanes, gates etc.
At least I thought that, but this article mentioning both is weird. It might be some sort of midpoint between the original names where the current ones were added before being phased out, or inRP they were there (like GS&M in Dublin as a BMM subsidiary).
