Migration : IDS users & orders

[loiseau]

Hi,

I try to migrate my website since a few days and always I have a problem with my users ids.
The migration imports all my products, users and orders but the ids does not correspond any more and the orders are not linked to the users.
When I am logged, I have no order in my account.
I tried different ways but always obtains the same error.
Do I make anything bad ?
Someone have any informations about that issue ?

Many thanks for help

Migration : Joomla 1.5.25 /  Virtuemart 1.1.9 > Joomla 2.5.2 / Virtuemart 2.02