It does happen if a story is submitted in a category that contains sex scenes that belong in a 'trump' category.
For example, Incest/Taboo trumps nearly every other category, so if an author tried to sneak in a story into Loving Wives about a wife who is having an affair with her first cousin or her stepbrother, it would be quickly moved to IT when it gets published.
For example, Incest/Taboo trumps nearly every other category, so if an author tried to sneak in a story into Loving Wives about a wife who is having an affair with her first cousin or her stepbrother, it would be quickly moved to IT when it gets published.