When provisioning or updating Notes users from AD using the following mapping in the Update and Provision tab, Notes users appear duplicated:
UserName - proxyAddresses
or
CN - proxyAddresses
Please follow below steps to avoid this issue from occurring:
1. add below script to the Update Attributes mapping:
$values = $srcObj.GetValues("proxyaddresses")
$values

2. Save and Activate the Configuration.
3. Edit the configuration.xml.
4. Locate the Connector by Name.
5. Locate the false line 6. Add the following test under the line found above:cn
7. Save and close the configuration.xml file.
8. Run the Connector.