Where did the folders go in zfs?

Question

linux

zfs on debian
Created a tank pool - The /tank folder appeared
Created more folders in it, wrote down all sorts of things
Replaced the controller with a similar one. Physical disks and breakdown are perfectly visible
Run zpool import -N tank. Everything worked without errors.
No folders inside /tank!
Where are the folders? The place USED, just corresponds to what I previously threw
zfs list
NAME USED AVAIL REFER MOUNTPOINT
tank 734M 536G 734M /tank

Answer 1

Looks like I'm a brake.
The -N key when importing for some reason wrote
-N Import the pool without mounting any file systems