Let me say this...
... I do not envy you.
I am not, currently, aware of a way of doing a mass update easily unless you go to the NameMapping panel and just use ALT-H to do a find and replace... this DOES work, but I think you'll want to do so with caution.
If however, you need to change the criteria from one property to another and ALSO update the values... Find and Replace won't work for you.
Sorry, man....
Hey no worries,
this is pretty much what I figured I would have to do, I was just hoping that there might be something magical to make this terrible information go away.
