Voyager... I think that regardless of the limit mark in the airplane instrument you should be able to see the real altitude in the speedbar (lower-left corner) so, if you fly without it I think you might be able to see the data it shows during a replay if you activate afterwards and just for the replay... in the other hand, if you fly using the speedbar you should have any problems reading the real altitude and indicated airspeed.
If anyone have tried this with different results let me know
over and out...