What is an orphaned group member?

[Sunshine]

This is an option when you begin the deleting process. The exact option is, "Remove orphaned group members after operation. Do I need orphaned group members; is it safe to select this option. Also, does this option give me more free space on my hard drive. Thanks to why ever answers my question.

[DV]

Orpaned group members are file names left in the list which (after deleting their duplicates) would be left on their own. This option simply removes them from the list - it's safe and doesn't remove them from the hard drive.