Change the configuration so the only synchronized attributes are userPassword and destinationindicator.
Execute the idsync resync -f <linking file\> command to link the entries and populate the destinationindicator attribute.
Change the configuration to include all the synchronized attributes. For example, add cn and uid.
Execute the idsync resync -o Sun command to synchronize the Active Directory attributes with their Directory Server values.
If the destinationindicator attribute does not need to be populated, execute the idsync resync -f <linking file\> -k command to only link the entries. Then execute the idsync resync -o Sun command to synchronize the Directory Server attribute values from Directory Server to Active Directory.