Privatizing would remove a lot of other information that is wanted. The only way for you to control the information that your concerned about is for me to remove the people involved. Then when I but out the next update the other sites will automatically have the information removed when they make the switch to the updated version. As for other descendants of Martha C. Blankenship, I would be willing to add any information that you care to send in. But don't send me anything that I'll have to remove latter.
Removals are a pain in the butt.
If you want to extract a tree from an existing file, start a new file, append from the file that has the information that you want. But Jim, I'm not sure I'm explaining myself. I don't want you to remove ANY names. Just the birthdates of the living. It's really a very simple thing to do.