If you approve this merge it will get you connected to this part of the World Tree and give you full access to update and add to that line:
http://www.geni.com/merge/compare/6000000021718463539?to=6000000016...
When that merge is completed you have to go into tree-view and continue merging eventually duplicates by clicking on the yellow triangles, or report back here so that others can help you.
Have a nice day!