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Can't speak to these Nissan directly or exactly but in doing other ATX changes I found it is far better to try to find the exact same year trans as the car, as the OEMs are constantly making running changes in them that often do not impact things but sometimes do in a major way. Say the final drive ratio changed (what does that mean in a CVT? I haven't a clue but don't tell me it can't), the software in PCM would not then match and errors all over the place. Trans needs to be from same model and engine too, things can change in model switching, the bellhousing can change with engine switch and trans then doesn't fit. Control harnesses change but likely not much issue there.
Software is set for each running change as needed. Sometimes you can update that but sometimes it can be a mistake to do it.
One way to find out might be to peruse the ATX parts places for blowups of the trans, if changes are made you should find different parts numbers and even in descriptions.
I know of Ford specifically, I had utter fits finding correct parts for an older one (Contour) that changed up every single year and the one I had, well it changed 3 times in that one year. The Focus cars are bad about it too. I like to never found all the parts it took to make that one version, and the trans also changed bellhousing pattern, electronics, final drive, trans mount for particular model, several things to make just the next year not work at all. All in like 3 years. And the exact same transmission, if by then you can still call it that.