Super CD+G discs cannot be converted back to CDG or MCG formats.  Super CD+G discs are made in a proprietary format of CAVS USA Inc. under US and International Patent and it is illegal/violation of the Copyright Laws to convert or tamper with the contents of Super CD+G discs without the consent of CAVS USA Inc.

Please note that the Super CD+G discs, currently released, contain both MCG and SuperCD+G (.dat) files.