I created a migrate script to import hundreds of records into a specific content type. A year after, I need to add another field to the content type and import values specific to each record. Because of changes made to some of the records over the past year, I cannot re-import the content from the csv file with the additional column. I am using config-edit to edit the migrate .yml file. Is there a way to rerun the migration to import content for the new field while ignoring all other fields that already have content.
I am using Drupal 8.