How to use file list to search in Lightroom
In every order and for a user’s favorites, Sunshine provides a comma separated list of image file names. This allows you to simply cut and paste into Lightroom to search your catalog for those images. Then you can edit and do whatever you need to do with those images quickly.
Here is a 3rd party video on how to search within Lightroom. Make sure you choose “Contains” and not “Contains All” when searching.