This is a new one on me.....

I was searching locations for a site using NameA and found nothing. I knew there was an alternative name possible and used NameB. The site was found. On examination I find that both NameA and NameB are entered for the site. More puzzling is that NameA is the preferred, though not the first name in the list, and NameA is the one that appears in the Locations tree.

How is this possible?