Thanks Nicolas for your answer.
Could you please develop :
Make sure that your Joomla 3.2 website has the users from the one website already in it with the same user IDs (so that they still have the same referenced id in HikaShop).
I have many users registered in Joomla (I suppose they are identical to Hikashop ones).
How do I retreive these users. Is it a simple Joomla table copy ?
PS : those users are also referenced in Acymail with Hikashop connection.
Will I retreive also these users ?
PS : it would be fine to have a configuration export in Hikashop.