I am using the drupal2drupal UI for a D7 to D7 migration. Is there anyway I can export the setting for the migration including the connection string and the field mappings so that we can repeat the exact migration on another server without having to repeat the UI setup?
There is a feature request for the Migrate module: Export migration configuration as code. Beware that this is highly experimental! Here is the summary of the issue:
You can now create a new Feature on the source site and select your configuration inside the Migrate fieldgroup. Check all options that apply and download/export your Feature.
Copy the Feature to your target site, enable it and then revert it to copy all your settings.