For a famous example of find and replace gone wrong, see the case about the creationist Of Pandas and People textbook and cdesign proponentsists:
The term "creationists" was changed to "design proponents", but in one case the beginning and end of the original word "creationists" were accidentally retained, so that "creationists" became "cdesign proponentsists". ... the proof that intelligent design was creationism re-labeled played a significant part in the Kitzmiller trial, and "cdesign proponentsists" has been described as "the missing link between creationism and intelligent design."