I tell drush this:
drush @live cim --skip-modules=system,swiftmailer
and drush replies with this:
Collection Config Operation swiftmailer.transport update system.performance update Import the listed configuration changes? (y/n)
and, if I reply "y", the settings in the live Drupal site are overwritten from settings previously exported from the dev system.
What do I have to do to avoid importing selected parts of an exported configuration?