Further investigation may reveal that the name difference is due to the OU having the "Displayname" attribute specified.
The Change Auditor Object Picker uses a generic function for all AD Objects that does not breakdown what to display based on the type of object. The function proceeds through a list sequentially to determine what attribute will be displayed based on first availability.
For example:
1. If there is a "sAMAccountName", then display the "saMAccountName".
2. If there is no "sAMAccountName", then display the "displayname".
3. If there is no "displayname", then display the "ou" attribute.
4. If there is no "ou" attribute, then display "cn".
5. If there is no "cn", then display "name".