"With 700+ footnotes to create, it's not going to happen in the blink of an eye. There may also be other aspects of your document you haven't told us about (e.g. 'Track Changes' is 'on') that might compromise the macro. We can only work with what we're given."

Yes, of course. As I said, I compare with the regex code I used and which doesn't turn my computer down and act (with the major problem explained above...).

You can find (see the address below) the exact version of the document I used as regards presentation, style, text, etc., that I anonymized today (took a long time! Does a tool exist for this purpose?).

http://dl.free.fr/fGzSid05k
(The file exceeds the 500 Ko allowed by this forum.)