Weird, If you are talking about a 1/2" drive that probably won't hurt a thing and could very well be a good setting to leave it on. If it is a 1/4" drive then it is a bit on the high side for most but most likely no harm done here either. Probably the biggest destroyer of calibration is over torquing past the setting, that will get one in a hurry! I have even known guys who would grab their torque wrench, because of it's long handle, and use it for a breaker bar
without giving any thought at all to calibration loss, of course these are the guys who can never seem to figure why they have all the bad luck.