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 080b34b4..fdb9204a 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
@@ -551,3 +551,5 @@ names the principle that settles it, and is cited as "design 47 G A-n".
 - **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.
+- **A-146** (A-145, §529, A-30; principle 5) The second reader release also carries §529/A-30's exception for a
+  foundation part's kept old sections, and only that, since the trunk validator must accept the new indexer manifest.