Option 1: Ask the company to do this from openupgrade through a valid contract by paying them money
Option 2. Try using the import / export option from the csv file
Option 3: Use the odoo etl link . You can find the video on the tube for odoo etl
Option 4. Use the migration tool available from the github link here
5: script . ubuntu (Linux OS),
6: python anybox.migration.openerp 0.9,