The All Blacks retained the Bledisloe Cup with a thumping 40-12 win over Australia on Saturday, star fly-half Beauden Barrett crossing for four tries.
That was followed by a 32-19 win for Argentina over the Springboks, suggesting they will be no pushovers against the world champions.
But head coach Steve Hansen insisted he will stick with his plan of resting star names like Barrett for their September 8 game in Nelson.
"You're always flexible in your thinking, but we've got a plan in place, and we've just got to trust everybody to do their jobs," Hansen said.