https://understanddrupal.com/articles/tips-writing-drupal-migrations-and-understanding-their-workflow

reset_status_migration_workflow.sh

# 1) Run the migration.
$ drush migrate:import udm_process_intro

# 2) Some non recoverable error occurs. Check the status of the migration.
$ drush migrate:status udm_process_intro

# 3) Stop the migration.
$ drush migrate:stop udm_process_intro

# 4) Reset the status to idle.
$ drush migrate:reset-status udm_process_intro

# 5) Rollback migration because the expected results were not obtained.
$ drush migrate:rollback udm_process_intro

# 6) Change the migration definition file.

# 7) Rebuild caches for changes to be picked up.
$ drush cache:rebuild

# 8) Run the migration again.
$ drush migrate:import udm_process_intro

rollback_migration_workflow.sh

# 1) Run the migration.
$ drush migrate:import udm_subfields

# 2) Rollback migration because the expected results were not obtained.
$ drush migrate:rollback udm_subfields

# 3) Change the migration definition file.

# 4) Rebuild caches for changes to be picked up.
$ drush cache:rebuild

# 5) Run the migration again.
$ drush migrate:import udm_subfields