Super Delfin
In 1996 the championship was vacated after then-champion El Pantera lost the championship to Super Delfin while on tour in Japan. Pantera left CMLL for AAA after the tour, and lost a match to Super Delfin in Japan, intending to surrender the championship to him. CMLL knew that Pantera was leaving and nullified the championship change, choosing not to vacate the title rather than recognizing the title change. CMLL put together a 16-man tournament to crown a new champion, and Máscara Mágica defeated El Felino in the final to become the seventh official CMLL World Welterweight Champion. Máscara Mágica would later defeat Super Delfin to put an end to any questions about the lineage of the championship. In 1998 the Mexican National Welterweight Championship was returned to CMLL, making it a tertiary title behind the CMLL and NWA branded world championships. In 2010 CMLL returned the NWA World Welterweight Championship to the NWA but immediately replaced it with the NWA World Historic Welterweight Championship. In early 2015 then-champion Máscara Dorada signed a contract to work for New Japan Pro-Wrestling (NJPW) for a year, with CMLL allowing him to take the championship with him to Japan. During his tour of Japan Máscara Dorada lost the championship to Bushi, which was officially acknowledged by CMLL.