Wrong name used in crumbs, group page

I have multiple names defined for a CO Person, one type 'Official', another of a custom type of our own, and a third type 'Alternate' that is also designated 'Primary'. I assumed the Primary would be the one that shows up the group membership list and breadcrumbs, but it is not. Also, the Primary is the one that shows up on the 'My Population' list, so there is a disconnect in which is being used.