To rebuild Lync’s copy of the AD data simply use the cmdlet.
Be aware that is stuff is more process intensive than the automatic delta synchronization.
To resolve this you have two option, manually update the Address Book or customize the update schedule.
Periodically, you might need to update or purge address book information.
Because Step #1 in the process happens by default every minute then any recent changes in AD should already be imported into the SQL database.