I am more than just simply guessing that they were putting her through a few quick turns before the onset of the proving flights......just to make sure she doesn't have any loose bolts or funny whistling noises that need to be addressed.

Now, once she passes the mini-evac - which I personally am hoping will be next week sometime - then any flights done after that successful completion of the mini-evac will count towards the proving flight hours.

As for now, this "mystery flight" is just another step closer to final certification.