when i change env i get data but all data from previous self env i lose it

# i get the name here

print(rec.partner_id.name)       

connection = sql_db.db_connect('odoo1')      

 with contextlib.closing(connection.cursor()) as cr:            

    env = api.Environment(cr, SUPERUSER_ID, {})            

    data = env['sale.order'].search([])

# i get False here

 print(rec.partner_id.name)