I am converting a website into a pdf file, article by article, currently
1,190 A4 pages with 2,882 footnotes and its not finished yet. The main
file has 4 additional files linked to it by '#+include:
/home/boudiccas/research/writing/book/file-1.org :minlevel 1' just
before I generate the glossary, bibliography, and index.

In 'file 5' I am actively converting/writing sections some of which need
to be parachuted (meaning dropped into their alphabetical place) into
some of the other files, but I know that when I do that the footnotes
will not be renumbered.

So how can I trigger a footnote renumber please?

Is there something like 'M-x org-footnote-renumber' that I can run
periodically in each sub-file to renumber the footnotes?

Thanks
Sharon.
-- 
A taste of linux = http://www.sharons.org.uk
TGmeds = http://www.tgmeds.org.uk
DrugFacts = https://www.drugfacts.org.uk
Debian 10.0, fluxbox 1.3.7, emacs 26.2, org 9.2.5