I am trying to migrate a Drupal 7 site to Drupal 8 on a new server I have copied the db so it can be used locally. I have run the drush migrate command and migrate-status shows a bunch of things that are ready for import. I can import users with drush migrate-import d7_upgrade_users. However the users have custom fields associated with them and I can't find how to import those fields through drush. Trying to export a csv from the old host is virtually impossible as it crashes out trying to do the export.
Is it possible to import all user data including passwords and custom fields from the command line using drush (or other command line tools) without the need to import everything?