j2store import users

Hi,

j2Store must use Joomla users, like HikaShop, so you should not need to do anything in that respect.
Now, to migrate user data (like custom user fields), I suppose you might be able to do it with RO CSVI:
rolandd.com/products/ro-csvi
I would recommend contacting them with more details on what you want to do exactly and they should be able to tell you if it's possible, and if so, how.