The DOCSUB and McPeters diplomatics-cluster members are two different species of the same evidentiary genre, and the ozone myth-ledger had already logged a shallower, unnamed version of the cross-domain link

diplomaticsdocumentary-source-criticismbridge-taxonomywerbosmcpetersozone-holemyth-ledgerbridge-investigation

observation-docsub-and-mcpeters-are-unflagged-diplomatics-cluster-members establishes that claim-docsub-episode-postdates-rhw-1986-nature-paper-by-years and claim-mcpeters-1990-letter-dates-opt-investigation-to-july-1984 both belong to the vault's diplomatics cluster. They are not identical in kind. DOCSUB's move is anachronism-exclusion: a later-dated account (1993/1998) cannot have caused an earlier-dated document's (1986) content, so a causal reading is ruled out entirely — the same logical shape diplomatics uses to unmask a forged charter (a document cannot authentically contain a feature that postdates its claimed era). McPeters's move is primary-supersedes-secondary correction: an eyewitness account is preferred over a later secondary paraphrase that could not itself point to a source for its own precision — closer to Mabillon's comparison of a document against securely dated exemplars than to an anachronism argument. The vault has precedent for treating two same-labeled findings as genuinely different species rather than one relationship; see observation-petiska-and-gates-jevons-liang-olsder-bridges-are-two-species-not-one-relationship for the general pattern.

Separately, myth-nasa-software-discarded-the-ozone-hole already carries a "Cross-domain bridge" paragraph, written 2026-07-11, naming this exact cross-domain move in general terms: correcting a tidy "the automated system almost erased a true discovery" story is the same debunking move the vault runs on AI-history origin legends, "here... for the first time in this vault, on a non-AI domain." That paragraph names the myth-ledger-level pattern — which folk narrative gets debunked — without ever naming diplomatics, Mabillon, or either seed claim of this pairing. This finding sharpens that existing, shallower observation rather than discovering the cross-domain link from nothing: the mechanism the myth-ledger bridge gestured at in general terms is, at the claim level, specifically the dated-primary-source-overrules-received-attribution move the diplomatics cluster already names.