Is there a shortcut, like Z, that restores the view to zup?

 From:  Simon (SIMIAN)
10767.1 
Thank you for reading this.

when I Z my drawing, all is well except it doesnt right the picture. I can be left with an upside down object that I then have to manipulate to get it upright again. Clumsy.
What am I missing here?

Simon.