As a result of the migration between servers, specialized characters in old posts are now being rendered as garbage quotes. The characters that are affected are mainly “, -, ‘, …, , ü , … Each of these renders into long garbage strings. To fix the problem, one needs to do a bulk find-and-replace over the entire database. I don’t know how to do it. There’s probably some information in WordPress but I don’t have the time to figure it out and it’s probably not very efficient for me to do so anyway. If someone more knowledgeable can volunteer a method, I’ll see if it passes muster with Pete Holzmann and/or Anthony Watts and see if either of them can fix things without screwing up something else.