Help! Somehow I made someone his own son! You can see the error here: https://www.geni.com/family-tree/index/6000000207244182897. They are the same person. However, when I try to merge them it only allows me to merge into the wrong relationship (father into son) and not merge the son into the father.
Can someone delete the additional son relationship? This is how it should work Heinrich Friedrich Christian Wohlfahrt is married to Wilhelmine Auguste Wohlfahrt and they only have one son, who is Otto Wilhelm Wohlfahrt You can see it laid out correctly on FamilySearch here: https://www.familysearch.org/tree/pedigree/landscape/GCM7-VPK