See Case Notes for Tangible Entities When You Export the Results of Searching Within a Case
When you do a normal search—like for a Person—you open the Person search form, select your criteria, and get some results. When you export these results you can select Related Cases or Related Source Docs.
In your Excel spreadsheet these columns contain the cases each person is in. The columns also contain the case notes, IRs, etc, that each person is in.
Previously when you exported your search results, if you selected Related Cases or Related Source Docs, nothing populated in these columns.
Now when you're in a case, you can initiate a similar search in the context of that case.
In the example above, the search will only find Persons that are in the case, and the Related Cases and Related Source Doc columns will populate correctly.