We see the option for Knowledge Gap but we do not use it. We go straight to Create Knowledge if we don't find an article created for an issue.

So when your knowledge workers create an article, they click publish and it goes into the review state? We are having issues with versioning because we keep our articles in the Draft workflow state unless it gets published to the End User's Service Portal. So since our articles are in the draft state, it doesn't create a new version when an update has been made. It appears that versioning only works in a published article state.