It’s all good ( in a way ) now.
I exported the products I had listed and used the .csv as a cheat sheet.
Abysmal luck with images. Correct format but the import kept failing
when one of the images couldn’t be fetched before time out.
I have read that this is a common problem.
They are buried under 4 layers of folders so maybe I can put a copy of
the folder at the root of my current web site to speed things up ( maybe ).