beforeFind ChangelogBehavior does not preserve condition for PrimaryName

Edited. See the comments. The first symptom was a problem provisioning to LDAP but the root cause is not with the provisioner but with ChangeLogBehavior.

A CoPerson record that has linked to it a Preferred and Author name in addition to Primary, Official is not provisioned because of an objectClass violation. The violation is that sn is not being included in the attributes. Some additional logging shows that the attributes being computed in function assembleAttributes() in CoLdapProvisionerTarget.php are

(
[objectclass] => Array
(
[0] => person
[1] => organizationalPerson
[2] => inetOrgPerson
[3] => eduPerson
[4] => eduMember
)

[cn] => Jeff Gaynor
[givenName] => Jeff Gaynor
[mail] => Array
(
[0] => gaynor@illinois.edu
)
[employeeNumber] => Array
(
[0] => mess100004
)

[uid] => Array
(
[0] => http://cilogon.org/serverA/users/555@co.cilogon.org
)

[isMemberOf] => Array
(
[0] => members
[1] => members:Facility
)

)