Update addressee values for all contacts after modifying Addressee Type Options
Use the update_greeting scheduled job.


Go to Administer > System Settings > Scheduled Jobs
Click Add New Scheduled Job, and enter the following values.


"Name": "Force Update Addressee Values"
"Description": (blank)
"Run frequency": "Every time cron job is run"
"API call": select "Job", and enter "update_greeting" in the text field
"Command parameters":

ct=Individual,Household,Organization
gt=addressee
force=1

"Scheduled Run Date": (blank)
Uncheck "Is this Scheduled Job active?"

(This is important because you don't want your scheduled job to run automatically.)

Click Save.
Find your scheduled job in the list of all jobs, and click More > Execute Now
Find your scheduled job in the list of all jobs, and click View Job Log. Verify that you see "Success" in the log. Troubleshoot any errors.