Thank you both for your help! The issue is solved.

Graham, When I pressed ALT+F9 to view the merge codes I noticed that
where {mergefield 6} should have been there was {ADVANCE \Y 687.60}

I'm not sure what it was so I removed it and lo, {mergefield 6}
reappeared. Now the last record merges correctly (I don't know why
this effected the field below it, {mergefield 7} but that's what it
did).

Mergefields like this «7» work for me... It looks at the 7th column
in the CSV file (earlier I had tried changing those to the header names
like «Addr2» but it did the same thing). So far when a field is
empty Word supresses it automatically.

Doug to answer your question, before fixing the problem, if I merged
directly to the printer as you suggested (by pressing the merge to
printer button) it prints out fine! If I merge to a new document (the
merge to new document button) and then print, it would show up okay in
the new document on the screen, but when I printed the new document the
mergefield «7» would appear on the last record instead of the data.
....Then if I did a print preview the last record would change to
mergefield «7» ...and *after* exiting print preview the new document
would also show «7».

One again thanks for all the help!
Ben