I did read that and followed the instructions. I saw no mention of how to import the requested fields (product description, product category etc.) when there is not yet a product ID assigned. Without the product ID (which was being assigned at import so I could not put it in the required column) the import failed.
Should I create an additional column for these fields like the one used to create a new product ID with the header action with insert below it so that the import will work where a product ID is required to import those particular fields?
What I ended up doing that did finally work was to import the product with the bare minimum information and THEN add things like Categories, Descriptions etc. and re-import.
No matter what I tried if importing new products that needed to have a product ID assigned to them, the import failed when I had data in the category, description and other fields.
If you could point me to the exact text that tells how to do this I would appreciate it. I have read the documentation several times and cannot find it.