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 fdb9204a..f3ebac4a 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
@@ -553,3 +553,5 @@ names the principle that settles it, and is cited as "design 47 G A-n".
   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.
+- **A-147** (A-123, A-132, A-137; principle 3) While a module runs at two fingerprints (a move under way), a recovery
+  act on its kept data is refused, naming both; the caller asks again once the move has ended.