Problem:
The customer reported that after migration to a new address using the Duplicator plugin, some of the content translated using the WPML string translation feature is still showing the old address links.
Solution:
During troubleshooting, I noticed that the Duplicator plugin had properly replaced the base URLs in the database, but they needed to be updated in the 'MO' file that WPML maintains for those string translations.
Suggested going to WP Admin -> WPML -> Support and click the blue 'Troubleshooting' link and then click the 'Show custom MO Files Pre-generation dialog box' which regenerates the MO files.