I discovered that out of 88 citations for a particular source, I inadvertently hit " instead of ' at the beginning of the citation detail for 51. I immediately thought of solving the problem using TMU, but can't seem to set the rules appropriately. Making sure I had Log Only set I did the following: Under Change Citation Parts\Set Rules I tried If Detail [and also: Any Detail Segment, Any Text Field, Detail 1] contains " Change Detail replace " with ' = no joy I tried typing in the full citation detail which includes the name of a specific chapter following the incorrect " which didn't help either. I tried If Detail [and also Any Detail Segment, Any Text Field, Detail1] starts with " Change Detail replace " with ' = no joy What is odd is that absolutely none of these rules turned up anything at all! I did manage to correct one citation where I needed to prepend the Chapter title to the specific area I was citing. But, so far, nothing else. Where am I going wrong? Toby