Customers edit problem

[MarkoSiroki]

Dear Sirs and Madams!

I've imported customer database from perstashop to newly created zencart based webpage. In admin part of webshop, when I click "Customers", I can see them, but if I click some customer to edit it, I get all fields empty, as customer is not selected. What can be wrong?

Sincerely,
Marko

[Ajeh]

Customers need to have 1 record in the tables:
customers
customers_info

and associated record(s) in the table:
address_book

[MarkoSiroki]

Yes, I know that, I was investigating database and I have found mistake: At customer import from prestashop, I did not refill fields entry_country_id, entry_zone_id from table address_book and because these fields have different codes in prestashop, the record regarding address country was not found, php statement returned null (error) and as a result I could not edit customer.