In 1956 season the club struggled, finishing in bottom of the table (12th place) with 14 points under Ferrobadminton, being relegated to the Second Division for the first time ever. Morning remained in the second tier only three years, until 1959. The second spell in the top flight lasted 11 seasons, before another relegation in 1970. In the 1970s, the club only played three seasons in Primera, suffering one relegation and before of the club's promotion in 1974, Morning remaining this four years. In 1981, the club gained promotion to Primera for the next season, but the club wasn't able to maintain top flight status and bounced back to the second level. In 1983, Morning struggled again and were relegated to , and made history as the first Primera División Champion to play in the third tier of Chilean Football, by the time a semi-professional league.