diff --git a/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md b/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
index a0a3a591..080b34b4 100644
--- a/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
+++ b/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
@@ -548,3 +548,6 @@ names the principle that settles it, and is cited as "design 47 G A-n".
   mesh-sdk and its domain SDK: the key codec `meshcatalogkey` moves into mesh-delivery's domain SDK, imported there
   by the builder and the catalog client, and the source-branches follower's use of the `mesh-delivery` seat's types
   moves into the domain SDK too; the catalog client keeps the mesh-catalog contract and the domain SDK only.
+- **A-145** (§621, §494, §697, ADR 0633 §6; principle 7) The second reader release carries only §621's words and what
+  the trunk validator needs to judge the new indexer's manifest and the `by-caller` definitions; §529's finding-stream
+  rules and A-116/A-128's seat reads are G's own validator rules, judged by the change's validator, and stay in G.