diff --git a/infra/scripts/move-day-deploy.sh b/infra/scripts/move-day-deploy.sh
index a281a06a..e1615486 100755
--- a/infra/scripts/move-day-deploy.sh
+++ b/infra/scripts/move-day-deploy.sh
@@ -23,9 +23,14 @@ X_BEARER_TOKEN=$(op read "op://allthings/allthings X app/Bearer Token")
 # stores images through the old account's upload Worker.
 MEDIA_UPLOAD_URL=$(op read "op://allthings/allthings media upload/url")
 MEDIA_UPLOAD_TOKEN=$(op read "op://allthings/allthings media upload/token")
+# The draft preview reads through draft_collab and seals rounds with this key.
+NEON_COLLAB_URL=$(op read "op://allthings/allthings draft_collab/credential")
+COLLAB_ANSWERS_KEY=$(op read "op://allthings/allthings collab answers key/credential")
 : "${NEON_READER_URL:?empty}" "${NEON_SYNC_URL:?empty}" "${LUMA_API_KEY:?empty}" "${X_BEARER_TOKEN:?empty}"
 : "${MEDIA_UPLOAD_URL:?empty}" "${MEDIA_UPLOAD_TOKEN:?empty}"
+: "${NEON_COLLAB_URL:?empty}" "${COLLAB_ANSWERS_KEY:?empty}"
 export NEON_READER_URL NEON_SYNC_URL LUMA_API_KEY X_BEARER_TOKEN MEDIA_UPLOAD_URL MEDIA_UPLOAD_TOKEN
+export NEON_COLLAB_URL COLLAB_ANSWERS_KEY
 
 # Prove the allthings profile can still deploy before waiting on it.
 bun run plan --stage prod --profile allthings >/dev/null
diff --git a/infra/tests/move-day-deploy.test.ts b/infra/tests/move-day-deploy.test.ts
new file mode 100644
index 00000000..faa4d2f2
--- /dev/null
+++ b/infra/tests/move-day-deploy.test.ts
@@ -0,0 +1,52 @@
+import { describe, expect, test } from "bun:test";
+import { readdir } from "node:fs/promises";
+
+const INFRA = new URL("../", import.meta.url);
+
+/**
+ * Every setting the stack reads from the environment: each `Config.String`,
+ * `Config.Redacted` and `requiredSecret` name in alchemy.run.ts and src/.
+ */
+async function stackSettings(): Promise<ReadonlySet<string>> {
+  const files = [
+    new URL("alchemy.run.ts", INFRA),
+    ...(await readdir(new URL("src/", INFRA)))
+      .filter((name) => name.endsWith(".ts"))
+      .map((name) => new URL(`src/${name}`, INFRA)),
+  ];
+  const names = new Set<string>();
+  for (const file of files) {
+    const source = await Bun.file(file).text();
+    for (const match of source.matchAll(
+      /(?:Config\.(?:String|Redacted)|requiredSecret)\("([A-Z0-9_]+)"\)/g,
+    )) {
+      names.add(match[1]!);
+    }
+  }
+  return names;
+}
+
+/** The names move-day-deploy.sh exports to the deploy. */
+async function exported(): Promise<ReadonlySet<string>> {
+  const script = await Bun.file(
+    new URL("scripts/move-day-deploy.sh", INFRA),
+  ).text();
+  return new Set(
+    [...script.matchAll(/^export ([A-Z0-9_ ]+)$/gm)].flatMap((match) =>
+      match[1]!.trim().split(/\s+/),
+    ),
+  );
+}
+
+describe("move-day-deploy.sh", () => {
+  test("finds the stack's settings", async () => {
+    expect(await stackSettings()).toContain("NEON_READER_URL");
+  });
+
+  test("exports every setting the stack reads, so its plan can't fail on move day", async () => {
+    const names = await exported();
+    expect(
+      [...(await stackSettings())].filter((name) => !names.has(name)),
+    ).toEqual([]);
+  });
+});