In the v10 calculation wizard, the source partitions are not vertically aligned when adding restrictions. This is because the datatype icons (Text, Pick List, Date, Comment, etc) are no longer a uniform width as they were in version 9. In v10, the icons are just name of the datatype spelled out with the text highlighted. This makes it much more difficult to read and locate source columns. Please make the source partitions align vertically, and if possible, make the icons icons again.