From what I recall the Germans put the pair into DM as a trial, for a few years. Although I can't remember how long it was intended to last. Or weather they really planned to put more in.
However I believe that them being in storage meant they missed some mods the rest of the German fleet got. And as a result I think the trial was eventually abandoned. In a similar DM thread on Phantoms by the poster on my other reply.
They also have an long spares recovered F-4F out there as well
As for the list of inmates even with Windows 10 and downloading the 7zip thing I can't read them!!
V1