How to restart stuck migration?

Connect to the server via SSH

Find the stuck plesk-migrator process and kill it:

# ps auxf | grep plesk-migrator | grep transfer-accounts
root 10964 1.8 5.3 813648 56480 ? Sl 01:18 0:09 _ /opt/plesk/python/2.7/bin/python /usr/local/psa/admin/sbin/modules//panel-migrator/plesk-migrator transfer-accounts /usr/local/psa/var/modules/panel-migrator/sessions/20170514005233/config.ini --migration-list-format=json --migration-list-file=/usr/local/psa/var/modules/panel-migrator/sessions/20170514005233/queue/queue-tasks/2017-05-14-01-18-14-1/migration-list.json --progress-task-id=2017-05-14-01-18-14-1 --skip-services-checks --skip-infrastructure-checks --skip-main-node-disk-space-checks --skip-license-checks --skip-capability-checks --ignore-migration-list-errors --reload-source-data

# kill 10964

Once it is done, plesk migrator reports that subscriptions are transferred. Subscriptions which were not transferred actually, are marked as "error" in subscriptions list.

Once all issues are solved and migration could be continued,

1. Login to Plesk
2. Go to Extensions > Plesk Migrator > %session name% > Subscriptions list and select all Subscriptions with "errors" status
3. Click "Migrate" in order to re-migrate failed subscriptions.