We have changed Supplier Reference because of ver.1.5 Prestashop changes.
If you look at PrestaShop Backend - supplier Ref. field was changed and transferred to another Tab by PrestaShop Team.
It was because of multi-supplier ref. list.
That's why we can't to reproduce 1 supplier ref. in the grid.
What should we do in case of multi-suppliers ? screen-shot -
http://screencast.com/t/GCdp5lf1
How to identify, witch supplier ref. to show in the grid in this case ? screenshot -
http://screencast.com/t/rKUjPfavwbP