Scenes from Iruvar Ullam were also featured extensively in the film, being used as flashback scenes depicting the backstory of Ganesan and Saroja Devi characters.
Saroja Devi considered Once More to be a sequel to Iruvar Ullam.
The film marked the debut of actress Simran in Tamil films, with Once More and her other film, V.I.P. both releasing on 4 July 1997.
The film was remade in Telugu as Daddy Daddy.
The director, S. A. Chandrasekhar, convinced Sivaji Ganesan to feature in the film after Sathya Sai Baba told him to continue acting for this movie.