I confirm the heading style is not assigned any list (see document generated file Heading1.odt attached).
Another thing... converting a doc to a docx could lead to numbering issues... As a matter of fact, Word handles heading styles differently in doc and in docx... In doc files, a new style is defined for each heading level whereas in docx, there is only one style defined for *all* the...
Heading starting with '0' was fixed by setting the 'UseOldNumbering' setting (see bug #1672196).
In settings.xml, the following line was added:
false
Also, it would seem that the numbering is incorrect as the style 'Heading 1' has no list assigned to it...
