The UK cinema version altered a line of dialogue to receive a 15 certificate. All video and DVD versions restore that line.
At the end of Loki and Bartelby's discussion of the arch's ability to cleanse the soul of all sin, in the DVD version Loki says, "If I had a dick, I'd go get laid." In the original theatrical version, the line was, "If I had a dick, I'd masturbate," referring to the Catholic belief that masturbation is a worse sin than fornication. (Essentially, this is because fornication can lead to marriage and procreation, but masturbation cannot.)
The version of Dogma shown at Cannes in 1999 was shown at the Vulgarthon 2000 in Red Bank, N.J. on 10/30/2000.