I have 5 'Join type' REGEX S&R that I use.
Only 2 do I ever run in ALL mode. the other 3, I step thru and do a Find (aka skip) if the visual shows it should not be applied.
It takes me 5-10 minutes to do the whole book. There are ALWAYS a couple of cases

the the keyboard Del or Enter is used.
Take a few and learn REGEX (there are a couple of tutorials here at MR). It will pay off and make
fixing so much easier that doing multiple Conversions while trying to fine tune the Heuristics settings