1) Imported products into Odoo 9.

2) Exported products to obtain Product Id.

This gives __export__.product_template_180 thru __export__.product_template_189 for the products

3) Create import csv file

name   line_ids/product_qty   line_ids/location_id/id   line_ids/product_id/id   line_ids/product_uom_id/id

Assign product ids from (2) to line_ids/product_id/id and relevant qty

4) Go to  Inventory > Inventory Control > Inventory Adjustments and import file

5) Export outcome of (4)

6) Successfully imported quantities for the first 8 products but although the final two product ids and qty are

as imported they have been attached to products 

  __export__.product_template_190 and __export__.product_template_191 from (2) export

Is the database corrupt and if so how can I repair? Or, is there another explanation?