iOS 6 contacts incorrect relationship labels

When setting contacts' relationships to me (eg spouse 'mary smith'), the first two contacts work fine and are editable. But the third and later contacts' labels seem to pick random relationships, and do not save on edit. So my parents home phone is my manager, my sister is my assistant, and my mother is my spouse. What a family.

This is for my linked contact info, because from reason I have 7 instances of myself in my address book... But I've checked each one and it's not inheriting this information from any of them.

Anyone else having this very specific problem?