Searchanise - Searching By Sku

I'm trying to search by SKU (Product Code) but it doesn't seem to work. The only way i can get it to work is by copying the Product Code into the GTIN field of the Google Export Features for the product, is this correct?

SKU is enabled to show in the search and is displayed correctly but searching by SKU does not work.

Suggest you put the SKU in the search_words area

Did you try to contact support team? I am sure that the search by SKU should work out of the box