How can you update a single configuration entity using drush?

Question

Every now and then, if I try to import partial configs using drush, like

drush config:import --partial --source=stuff/is/here

drush seems to understand that some of these config entities exist in the database, and it needs to update them.

+------------+---------------------------------------------------------------+-----------+
| Collection | Config                                                        | Operation |
+------------+---------------------------------------------------------------+-----------+
|            | migrate_plus.migration_group.foo_migrate                      | Create    |
|            | migrate_plus.migration.upgrade_d7_node_complete_article       | Update    |
|            | migrate_plus.migration.upgrade_d7_taxonomy_term_article_types | Update    |
+------------+---------------------------------------------------------------+-----------+

I was assuming because it noticed the uuid in the files matches those in the database. But if I try exactly the same command the second time, it will only say 'Create', and when I execute it, it throws an error saying they already exist.

The behaviour actually seems the same if I remove the uuid from the yml files.

I like to be able to edit, update, edit, update, without having to manually remove these entities (or reverting the database). Is that possible ? How ?