What are the differences?
The only thing I found was this
>If you own the Nintendo Switch title Pokémon Legends: Z-A, you can upgrade it to the Nintendo Switch 2 Edition by purchasing an upgrade pack, whether you own the digital version or the physical version of the software. The Nintendo Switch 2 Edition will also be playable on the Nintendo Switch system. When playing the Nintendo Switch 2 Edition on Nintendo Switch, the content will be the same as that of the Nintendo Switch software. Additional content that utilizes the specs of Nintendo Switch 2 will not be included.
You can buy the Switch 2 copy and put it into your Switch 1, and it'll play? I don't own a Switch 2, so I didn't know you could do this