Edit contact info

I am having a problem with the “edit contact info” feature that is accessed when you right click on a friend. I use this to keep track of who is who. I can edit this info but the next time I close yahoo and reopen, it is gone. If I do the same thing again, I get a warning that “An entry with the same first and last name already exists in your addressbook. Do you want to merge this data?” I have reported this problem to yahoo and they have told me to copy my profile folder to my desktop to save it, then uninstall Yahoo, delete the Yahoo folder, and reinstall. Then move the profile folder back. This fixes the problem, but each time I update the Yahoo version, the same thing happens again. This only happens by the way, on 1 on my computers. It seems that my Yahoo Messenger is not syncing up with my Online addressbook. Does anyone else have this problem? Any ideas?