Bowdlerization

Bowdlerization is the act of cleaning up what is deemed to be unsavory elements in an adult-oriented work of fiction in order to give it an appeal to a broad audience of both adults and children, though mostly it is for the sake of making the story suitable for children.

Empath: The Luckiest Smurf stories
As an in-universe example in the EMPATH: The Luckiest Smurf story series, it is assumed that its version of Peyo, who got his hands on the memory crystal containing the total history of the Smurfs, bowdlerized the account of how Smurfs reproduce when he produced the fictional series The Smurfs by having the male Smurfs be brought to the village as baby Smurfs from an unknown location through a delivery stork.