I discovered that two ancestors had the same grandfather. That grandfather had several generation of relatives. I tried deleting one. But I see no way to make the other one the existing person. I tried deleting both and adding one back. But I still see no way to make him the person in the other person's lineage?
Yes, I did that. But I did figure it out. You had to select Parents, Attach and I was able to get the existing parents on the person. It was pretty buried...