Fields order

This is what i have done :

1. Added some fields to the general user account form : admin/config/people/accounts/fields
2. Created a Seller profile, with unique registration path, without fieldset wrapper : admin/structure/profiles
3. Added some fields to the Seller profile
4. Added again some field to the general user account form
5. Set the correct fields weight in both general user account and Seller profile to be displayed in the right order

But in the Seller creation page, the fields are displayed in this order :
- First general user account fields
- Seller profile fields
- Last created general user account fields

How can i display all the general user account fields, then the Seller profile fields ?
Thank you