You can use the refresh task from the account section to update the UPN to the new one.
https://www.quest.com/community/on-demand/f/forum/33748/on-demand-migration---refresh-accounts---new-feature-spotlight
To update the Primary SMTP Address, the Match task will need to be completed again.
This will re-read the Primary SMTP Address of the target account and update it within ODM once the Match completes.
