Good Morning Richard,
Could you please check my blog's files? After spending many days preparing my wordpress.org blog to follow all the advice of the wordpress.com codex, I guess that I did not consider "everything".
The first time I imported, the theme I chose displayed all of the "excerpts" of the blog posts. My excerpts were dry and more like media descriptions than blog excerpts- my mistake- so I went back into the wordpress.org blog, deleted all 15 post excerpts, and then exported the .org blog again.
I then when back into the wordpress.com blog, deleted all content by hand, and then tried to re-install a "fresh" install of the renewed posts, which didn't work.
At this point there is only half-imported content. I'm sorry after my efforts to "do this right" if I've caused you more work.
Thank you so much for your help.