I'm currently migrating datas from my old OpenERP V5 to a new fresh install of OpenERP V7. I'm exporting CSV data from V5 and importing to V7. Working fine for partners, products, orders, except invoices. It seems not possible to import new invoices. It works only when exporting and importing already existing invoices. It seems there's no "number" field for import.

This file work (invoice with external ID "__export__.account_invoice_1" allready existing) :

id,payment_term/id,date_due,date_invoice,name,currency_id/id,origin,note1,period_id,comment,invoice_line/product_id/id,invoice_line/name,invoice_line/origin,invoice_line/price_unit,invoice_line/quantity,invoice_line/discount,invoice_line/sequence,invoice_line/invoice_line_tax_id,supplier_invoice_number,partner_id/id,note2,company_id/id,user_id/id __export__.account_invoice_1,__export__.account_payment_term_7,2013-12-30,2013-12-30,,base.EUR,,,12/2013,,__export__.product_product_75,My product A,,631.66,1.0,,,19.6,,__export__.res_partner_1055,,base.main_company,base.user_root ,,,,,,,,,,__export__.product_product_75,My product A,,347.59,1.0,,,19.6,,,,, ,,,,,,,,,,__export__.product_product_52,My product B,,45.0,1.0,,,19.6,,,,, ,,,,,,,,,,__export__.product_product_4,My product C,,,1.0,,,19.6,,,,,

If I change id field from "__export__.account_invoice_1" to "__export__.account_invoice_2" (wich doesn't exists) in the csv file, it drive me to "'NoneType' object has no attribute 'group'" error.

Is there another way to import invoices ? Is there a way to bulk create invoices in OpenERP V7 ?