I had this issue before so reinstalled wordpress site to start from scrach. On first wordpress install I started upload products but stopped it due to wrong setup on csv file. When updated file I started new upload with insert and update and got errors such as Not enought permissions to update records.
Decided to reinstall wordpress and started again. With new importer from WP ALL import started upload products from csv file and got error agin as before Not enough permissions to update records.
Now I started upload again and set permissions to insert new records and update existing.
If you look at attached screen shot it says more products updated then inserted, how its possible if there are not products to update unless those which managed to upload.
At the end of upload i should have 272463 products but it only shows ammount of 312 products.
Where are the updated products.
PS: Is there database which has old records on it even with wordpress reinstalled. Where are updated products.