Well then you won’t be so lazy you could create new empty hood with cleaned up templates and no respawn mods and move your simmies into new place. That works best for me and townies don’t spawn ^.^
I think I might at some point, I even meant to do so back when my hard drive fried until I found a shortcut (aka a backup from December 2014 + remaking the handful of new sims I added since then). But for now I think I’ll stick to it since it has not yet broken on me (thanks, HoodChecker :D)