The 8VA was present too, however they only lost less than a dozen aircraft over the country and did not operate near II./JG 52.
We looked at all Soviet units which would of had a chance of being remotely close to where the 8 pilots made their claims. About 50ish units between the 5 and 17 VA, then on top of that the 18 VA (ADD), then PVO units and then the American units.
As a matter of fact, we even included a map of where these units operated at the VA level on p.55 so the Respected Reader could understand that there is no use in reviewing 8VA losses when an action occurred near Szekesfehervar.
So yes, we did cover all our bases.