When I reformat captions (e.g., convert from center to
left justified), all throughout the document, figure
captions are moved from inside to outside of their
frames, and table captions suddenly move from their
normal, unbordered appearance at the top of tables to
being inside of large bordered frames.  If I do an
immediate CTRL-Z, this seems to undo the reformatting and
leave me where i want to be (it takes a second CTRL-Z to
undo the reformatting just done).  However, if I forget
the CTRL-Z and simply press on, I can get into a world of
hurt.  Is there some way to undo this particular
autoformatting; the boxes available to uncheck in the
various Tools-Autoformat tabs don't seem to supply what's
needed.