Well, why Symantec does not provide a "task", for being able to automatically create Locations based the imported AD sites, and associate auto all the subnets each? I spent 1 full day for doing such manually...
All the same we will move later on those locations to the best sub-locations.
I would like also the same task to update existing (correcting the good subnet list according AD sites&subnets) !! Creating new sites, on root Org views by location.