"Playlist String" or something like that. I noticed this when I changed the PE ATF string I was using and saw that that column contents changed to match it. Older records used the previous PE ATF string. Not necessary, but would it be possible to add an option to update old records to match the active PE ATF string.
Since I'm using 3 different ATF strings in different places for the playing file, I've now changed the PE string to only show %title% and thus match the column heading in the history view.
Things could stay as they are, changes are not really necessary. Once I noticed this behavior and realized it wasn't an history view error in reading metadata, I decided to mention it.