Openldap version / behavior wih duplicates

[maudez . eric]

Hello,
I notice a different behavior between versions OpenLDAP 2.4 and OpenLDAP 2.6 
for synchronization management and duplicates.
In the version OpenLDAP 2.4, there is no error when duplicates are found 
(different branch in openldap) during synchronizations (syncrepl)
With version OpenLDAP 2.6, synchronizations are in error
Do you know why?