Thank you: Taryn, Jon and Jim. I was trying to make it more complicated than it really is; need to remember and apply the KISS acronym. ICW is simply the list of names in common from two sets of matches. The intersection of two sets. It is the same idea as the 2 kits list from GEDmatch when using "People who match one or both of 2 kits", except on GEDmatch you can control the matching. I tested this on two sets of my FTDNA matches where I can view both sides and yes, the ICW people are those that are in both lists. Thanks again, Jim --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus