Looks like a PbZ train. (Personenzug für besondere Zwecke) I think the total random mix is weird, it's usually a random ish set of coaches for that area either to or from a repair yard I think. occasionally some loco's get dragged in with the mix too. always a fun sight to see them pass.
It was intentional from what I recall, sort of a "scratch set", a service train formed with whatever rolling stock was available.
This Service only appears if you have Ruhr-Sieg Nord, the DB BR 363, and the original DB BR 101 installed. The Wagons are transported to Lübeck, where they must then be sorted by the DB BR 363.
