If you run a Data Window query with the results broken out by Class Shift State Bred, you can see the 5 different class shift categories (they are numbered 0 through 4) related to state bred vs. open.
Preset filter codes beginning with the characters "CLSB" and "SB" (without the quotes) can be added to UDMs or applied to any set of results in the Data Window.
SQL Mode:
It's been asked for in the past - but other (more important) data items keep getting my attention.
My intended strategy for adding it to sql mode will be to add a "handle" for it in the Impact Values Table Wizard so that it becomes a "grab-able" factor. From there, for those that want it - a UserFactor could then be created as a direct translation of it. (Behavior = 3 Translate.)