If you are using CAS, you can restore the CAS configuration for each application. Copy the backups of the <app dir>\config\cas and <app dir>\config\mdex directories over the <app dir>\config\pipeline <app dir>\config\cas and <app dir>\config\mdex directories of your migrated applications.

You need to update all absolute file paths in the configurations to point to the new target locations, for example, "last_mile_crawl.xml".