CiviCase: Migrate historical logs
At administer - civicase - civicase settings there's a setting for Enable Embedded Activity Revisions. The civicase extension suggests turning that off and instead using administer - system settings - misc - logging.
Migrating 10 log records probably isn't worth it, and the revisions setting hasn't worked properly in the UI for a few years now anyway so you probably don't have a complete set of revisions unless your case activities are mostly created by customizations/api, but if you want to test out the migrator there's one at https://lab.civicrm.org/extensions/caseactivityrevisionmigrator