New birth date rule

This is a rule that applies to your family trees. Please pay special attention to the birth dates. As you've all learned the hard way, some birth dates are better than others. When you add a document to your family tree, and it has the most complete date from the best source, mark it as Preferred.

In other words, if you come across a good source with a birth date that is more complete and accurate than any you've already attached to your tree, please mark that date as Preferred.