You may have noticed that while creating/updating their Q&A Profile users will be prompted a “The answers must match” warning/error immediately upon clicking the ‘Confirm answer:’ field.
This is by design. An enhancement request (TF00775745) has been created detailing the feature above.
The product team will evaluate the request and this feature may become available on a future release of the product.
Please refer to this article for updates or contact support referencing the Enhancement Request ID: TF00775745.