At the moment there are code duplications between migration and batch processinstance operations on js level as well as markup.

Please fetch generic components which are extended\overriden by every specific operation implementation.

For example webapps/camunda-webapp/plugins/src/main/resources-plugin/cockpit/batch/process-instance-delete/app/page/components/instancesList.js has bunch of methods which are exact copy of methods in webapps/camunda-webapp/plugins/src/main/resources-plugin/cockpit/migration/app/page/components/instancesList.js

please also think about paths on the application level