Handelsblatt reports that LH positioned 10 airframes from MUC to FRA yesterday by special permit. These were flying at 3 km under VFR. Why VFR?
Because ATC can not give an IFR clearance as the airspace is regulated to zero flow which means no IFR clearance can be given to enter the relevant airspace. VFR is still allowed of course as the airspace is not closed.