Problem: In OpenOffice 1.1.0 Writer, if you use a custom template (user-created
.stw file) that includes a TOC and only level-1 headings (Heading 1), when you
add any subordinate heading levels (Heading 2, etc.) and update the TOC, the TOC
does not include any added subordinate headings. (Only added or deleted level-1
headings are reflected in the TOC.)

How to duplicate the problem:

1. Create a Writer document with an empty paragraph on the first page.
2. Insert a manual page break.
3. On the second page, create a Heading 1 paragraph (a title for the first major
section, such as "First Major Section Title"), and press Enter.
4. Put some text in the first paragraph. For example: "[Replace the preceding
heading and this paragraph with the start of the first major section of your
document.]"
5. Go back to the first page, and insert a Table of Contents. (It will include
only the Heading 1 text that you created in step 3.)
6. Save the file as a template (.stw). Give it a distinctive name, and put it in
the default templates directory.
7. Create a new document based on that template (File > New > Templates and
Documents).
8. At the end of the existing text, add a section title and make it a Heading 2
paragraph.
9. Optionally, add text and additional Heading 2 and some Heading 3 paragraphs.
10. Update the TOC (right-click, select Update Index).

The updated TOC does not contain any added Heading 2 or Heading 3 paragraphs. My
guess as to the nature of the problem: for a custom template, the TOC will only
get updated for paragraph styles that are actually applied to one or more
paragraphs in the template. When I created a custom template that had a Heading
1, Heading 2, and Heading 3 paragraph, and then created a new document based on
that template, the TOC updated as expected when I added, deleted, and replaced
different levels of headings.