Person record not update by AD sync project

Question

Dear Experts 
 
 I have created a sync project for AD and I want to regularly sync the AD user and group information back to IDM, i set the TargetSystem\ADS\PersonAutoSync to "SEARCH AND CREATE", the ADSAccount and Person record are created during the first time discovery. If I change the AD account attribute such as title, expiration date, the changes are only happening on ADSAccount table but not for Person record. May I know how I can let the change happens on Person record if the Person record has been created before. 
 
 Thanks 
 Gary

Markus Weiss-Ehlers · Answer

In the Active Directory Administration Guide you will find a list of configuration parameters. https://support.oneidentity.com/technical-documents/identity-manager/9.2.1/administration-guide-for-connecting-to-active-directory/51#TOPIC-2197602

I think this is the one you are looking for.

TargetSystem | ADS | PersonUpdate

Specifies whether identities are updated if their user accounts are changed. This configuration parameter is set to allow ongoing update of identities from associated user accounts.