Moodle 2.4.1+ (Build: 20130308)
The users lives in DOMAIN>BU>BENCO>User Accounts>Dispatch
All users in this OU were created by the script except 1, I compated attributes and didn't see any differences.
I updated a field to see if it would trigger the script but it didnt.
Contexts: ou=business units,dc=benco,dc=com