I made a mess. Does anyone remember how to back out of (undo) a global search and replace in CFStudio5? Should be the same process for Homesite+.
Update: Seems like I remember undoing a global search and replace in the past. Fortunately my replace string was absolutely unique and I was easily able to fix this with another global search and replace. The lesson is "don’t start a global search and replace and walk away from the computer for 15 minutes. If you did the find part wrong, you could be faced with many of changes!"