[Firadeoclus]

Rather than semantically splitting the original content (by either using unidirectional links or getting rid of the connection entirely), it seems to me that keeping the content in a versioned database with bidirectional links is much preferable from the user's point of view.

The versioned database takes care of grouping related edits and lets you point at a specific, immutable version. While bidirectional links let you efficiently find all usage sites so that you can make an informed decision as to whether they need updating.