[O] sectioning depth limit on export

[Pedro Silva]

I'm having problems over a document with headings down to a depth of 5
export the levels 4 and 5 as \paragraph and \subparagraph, respectively.

My org-export-latex-classes includes the following:
("article" "\\documentclass[11pt]{article}"
 ("\\section{%s}" . "\\section*{%s}")
 ("\\subsection{%s}" . "\\subsection*{%s}")
 ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
 ("\\paragraph{%s}" . "\\paragraph*{%s}")
 ("\\subparagraph{%s}" . "\\subparagraph*{%s}"))

My source document includes the following:
#+LaTeX_CLASS: article, my org-export-latex-class is "article", and my
org-export-latex-sectioning-depth is locally set to 6 (default is 3).

According to the "More Highly-Structured Documents" subsection of "Latex
Export" worg tutorial
<http://orgmode.org/worg/org-tutorials/org-latex-export.html#sec-3>

This setup should produce the following document structure, when
exported to LaTeX:

* section
** subsection
*** subsubsection
**** paragraph
***** subparagraph

However, this is what is produced:

* section
** subsection
*** subsubsection
**** itemize
***** sub-itemize, etc

This happens with all export types I've tried, namely LaTeX, HTML, and
plain text.  Any ideas about how to force export of 4 and 5-level deep
headings as paragraph and subparagraph headings in LaTeX?
-- 
Pedro