Add a new Dynastic Rule to the Ruleset.  Call it “Historic Tomes” and give it the following text:

Archived Rulesets from previous dynasties cannot be modified except by CfJ, and Scribes shall not attempt to modify them.  This does not prohibit archiving the current Ruleset at the end of a dynasty.

Any non-Ruleset document on the Blognomic wiki that would qualify as gamestate under the final Ruleset of a dynasty before the current one (a “Historic Document”) may not be modified except as explicitly permitted by other rules. If a Dynastic Rule attempts modify a Historic Document, the following steps happen in order instead:
1) A copy of that wiki page is made at a subpage of that page found by adding “/dynasty141” to the end of its URL (that Historic Document’s “Manuscript”).
2) All references in the Ruleset to the Historic Document are modified to refer to its Manuscript instead.
3) The modification happens to the Manuscript instead of the Historic Document.