🚀 go-pugleaf

The first step is to check the Numbering properties of the
paragraph tag used for your figure numbering. Open the
Paragraph Designer (ctrl+M) for such a paragraph and
check the Numbering tab. From your description I assume
the autonumbering definition uses something like
"F:Figure <n+>". If it doesn't start with a letter and a
colon, e.g. "F:", you really should change the definition
of the paragraph tag, Update All, and import that format
definition into all files in the book. This all depends on
whether you use a template and who controls it.

The next step is to check the Numbering properties of
the files in the book. Select "Section1" in your book file,
open the Numbering properties and check the tabs
called "Chapter" and "Paragraph". They both should
say "Restart numbering at 1" assuming you want your
first chapter file to actually start numbering at 1...

Then select the remaining "Section" files in your book,
and check the same tabs. They both should say
"Continue numbering".

If you change anything in the Numbering properties
in the book file, don't forget that you need to update
the book to make the changes take!

-- 
/Thomas Michanek