diff --git a/documentation/architecture/decisions/D535.md b/documentation/architecture/decisions/D535.md
index 0801b2bb85..eb1169e1de 100644
--- a/documentation/architecture/decisions/D535.md
+++ b/documentation/architecture/decisions/D535.md
@@ -270,6 +270,27 @@ not printed; the stage reason dropped; the header's total hard-coded; the
 profile swallowing its list error; a count while loading; the size-reason note
 dropped.
 
-**Still open on #1081.** The currency question (until it is answered, only the
-EuroTech list shows a size), and the 987 "Shai Goldman" rows whose source is
-not in the repo.
+**Still open on #1081.** The 987 "Shai Goldman" rows, whose source is not in
+the repo (see "Decided, 2026-10-06" below).
+
+## Decided, 2026-10-06 (S1 on #1081)
+
+**1A: a fund's size currency is derived from its list's name.**
+- Rule: `EUR_SOURCE` in `services/researchFundDirectory.ts` gives the EuroTech
+  list euros. Every other list's sizes are not shown, and each row says why.
+- No `size_currency` column, so no migration.
+- This is correct for both lists D1 holds today. A future list that states its
+  own currency gets a rule beside `EUR_SOURCE`, which is code.
+- This supersedes the "currency column on every row" item under "Not done
+  here" in steps 2–3.
+
+**2A: the third list is imported once its file is in the repository.**
+- The owner's 2A on #1083 keeps the lists, which rules out dropping it (C).
+- Leaving production's rows with no rebuild path (B) would leave data nobody
+  can recreate.
+- The file is the owner's to supply, in one of two ways:
+  - commit a CSV export of the sheet D597 cites under `attached_assets/`;
+  - or allow `docs.google.com` in the agents' environment, which #1232 needs
+    too.
+
+  The import, with its currency, follows in its own PR.