It's taken an hour or so, but I've managed to whittle down what I
believe is a nasty bug that can cause InDesign to crash, or worse, to
silently delete footnotes. Try this:
Procedure 1:
Create a text frame.
Type this text "Cram" without quotes.
With the cursor after the "m", insert a footnote. Type some words in the
footnote.
Now, in the find GREP field, type "(m)(~F)" which searches for an s
followed by a footnote marker
In the replace field, type "sh$2", which should replace the m with sh.
Click on "Change all".
InDesign crashes.
Procedure 2:
Repeat the above, but instead of clicking on "change all", click on
"change".
Result: The most obvious is that you've lost the footnote. Bad. But
apart from that, the replace hasn't really worked properly.
I've only tested this in CS6 on Windows. Do you get the same result?
Ariel