Since I can read German pretty well, I can give you a bit more info.

It seems like this isn´t even the Dora they were looking for in the Schweriner See, back in 1990. They were searching for, and thought they´d found the machine of Fw. Bruno Ostrowitzki of I/JG 26, but on running the numbers, it turned out to be the aircraft of Uffz. Karl Fröb of 2./JG 26, possibly brought down due to coolant loss – they found a hole in the radiator. I can only suppose that Ostrowitzkis machine is still down there.

I can´t believe that they would have replaced all that metalwork with FlugWerk parts. Perhaps FlugWerk made the repairs? It certainly appears to have been in good enough condition to use in a static restoration. They do mention replacing the rather badly messed up wing with one from an FW 190 A-8/A-9.

The museums other 190 A8 was dug out of a hole in the ground near Cologne and is a more likely candidate to have received FW sheetmetal parts.