Delete an Answer Version
You can delete answer versions without deleting the entire answer.
Deleting the live version of an answer causes the answer to be lost temporarily from any report or functionality that relies on it. Publishing a draft version restores that functionality.
However, you cannot delete the live version of an answer from the Service Console without deleting the answer (and all of its other versions).
To identify answers that are missing live versions, run the Answers Missing Live Versions report, found in Public Reports/Service/Views - Service/Editor Reports - Service.
Results:
All answer versions are deleted.