While it's possible to create a duplicate of a story when you want to start a new script with the same characters (a TV episode, an issue of a comic book) this means there are now two instances of a character's details, which don't update each other. Especially in serial fiction, it would be handy to be able to continually expand a project as new scripts are written.

This can mean either allowing multiple scripts to be attached to a story, or to share characters between two or more scripts, such that updating a character's details in one story also updates these changes in the other stories to which it's shared.