diff --git a/packages/ERTP/src/typeGuards.js b/packages/ERTP/src/typeGuards.js
index 0511bdb3a42..78fd4e30475 100644
--- a/packages/ERTP/src/typeGuards.js
+++ b/packages/ERTP/src/typeGuards.js
@@ -234,14 +234,3 @@ export const makeBrandedAmountPattern = amount => {
   return { brand: amount.brand, value: M.nat() };
 };
 harden(makeBrandedAmountPattern);
-
-/** @param {Ratio} ratio */
-export const makeBrandedRatioPattern = ratio => {
-  const numeratorAmountShape = makeBrandedAmountPattern(ratio.numerator);
-  const denominatorAmountShape = makeBrandedAmountPattern(ratio.denominator);
-  return harden({
-    numerator: numeratorAmountShape,
-    denominator: denominatorAmountShape,
-  });
-};
-harden(makeBrandedRatioPattern);
diff --git a/packages/boot/test/bootstrapTests/test-vaults-upgrade.js b/packages/boot/test/bootstrapTests/test-vaults-upgrade.js
index 30f6de222ed..1dbad275c1d 100644
--- a/packages/boot/test/bootstrapTests/test-vaults-upgrade.js
+++ b/packages/boot/test/bootstrapTests/test-vaults-upgrade.js
@@ -305,6 +305,8 @@ test.serial('restart vaultFactory', async t => {
   const { privateArgs } = vaultFactoryKit;
   console.log('reused privateArgs', privateArgs, vaultFactoryKit);
 
+  // XXX insufficient.  The kernel doesn't like this storageNode. Have to make a realer one.
+
   const storageRoot = makeMockChainStorageRoot();
   const newStorageNode = await E(storageRoot).makeChildNode('governance');
 
diff --git a/packages/deployment/upgrade-test/upgrade-test-scripts/agoric-upgrade-11/more_actions.sh b/packages/deployment/upgrade-test/upgrade-test-scripts/agoric-upgrade-11/more_actions.sh
new file mode 100644
index 00000000000..0ee90582d39
--- /dev/null
+++ b/packages/deployment/upgrade-test/upgrade-test-scripts/agoric-upgrade-11/more_actions.sh
@@ -0,0 +1,112 @@
+#!/bin/bash
+
+. ./upgrade-test-scripts/env_setup.sh
+
+# Enable debugging
+set -x
+
+# CWD is agoric-sdk
+upgrade11=./upgrade-test-scripts/agoric-upgrade-11
+
+# hacky restore of pruned artifacts
+killAgd
+EXPORT_DIR=$(mktemp -t -d swing-store-export-upgrade-11-XXX)
+WITHOUT_GENESIS_EXPORT=1 make_swing_store_snapshot $EXPORT_DIR --artifact-mode debug || fail "Couldn't make swing-store snapshot"
+HISTORICAL_ARTIFACTS="$(cd $HOME/.agoric/data/agoric/swing-store-historical-artifacts/; for i in *; do echo -n "[\"$i\",\"$i\"],"; done)"
+mv -n $HOME/.agoric/data/agoric/swing-store-historical-artifacts/* $EXPORT_DIR || fail "some historical artifacts not pruned"
+mv $EXPORT_DIR/export-manifest.json $EXPORT_DIR/export-manifest-original.json
+cat $EXPORT_DIR/export-manifest-original.json | jq -r ".artifacts = .artifacts + [${HISTORICAL_ARTIFACTS%%,}] | del(.artifactMode)" > $EXPORT_DIR/export-manifest.json
+restore_swing_store_snapshot $EXPORT_DIR || fail "Couldn't restore swing-store snapshot"
+rm -rf $EXPORT_DIR
+startAgd
+
+######################################################################
+# FIXME: remove this line when these tests don't hardcode bundle hashes.
+echo 1>&2 "FIXME: skipping zoe-full-upgrade tests"; return 0
+
+# Pre-steps:
+#  * fill Wallets
+#  * build and install bundles
+#  * create instance of prober contract and run expecting no atomicRearrange
+#
+# Action:
+#  * upgrade Zoe and ZCF
+#
+# Finish
+#  * create instance of prober contract and run expecting to see atomicRearrange
+
+yarn --silent bundle-source --cache-json /tmp packages/zoe/src/contractFacet/vatRoot.js Zcf-upgrade
+yarn --silent bundle-source --cache-json /tmp packages/vats/src/vat-zoe.js Zoe-upgrade
+yarn --silent bundle-source --cache-json /tmp packages/boot/test/bootstrapTests/zcfProbe.js prober-contract
+
+echo +++ checking Zoe/Zcf hashes +++
+ZCF_HASH=`jq -r .endoZipBase64Sha512 /tmp/bundle-Zcf-upgrade.json`
+ZOE_HASH=`jq -r .endoZipBase64Sha512 /tmp/bundle-Zoe-upgrade.json`
+echo bundle-Zcf-upgrade.json $ZCF_HASH
+grep $ZCF_HASH $upgrade11/zoe-full-upgrade/zcf-upgrade-script.js || exit 1
+echo bundle-Zoe-upgrade.json $ZOE_HASH
+grep $ZOE_HASH $upgrade11/zoe-full-upgrade/zcf-upgrade-script.js || exit 1
+
+echo +++ prober hash +++
+PROBER_HASH=`jq -r .endoZipBase64Sha512 /tmp/bundle-prober-contract.json`
+echo bundle-prober-contract.json $PROBER_HASH
+grep $PROBER_HASH $upgrade11/zoe-full-upgrade/run-prober-script.js || exit 1
+
+echo +++++ fill wallet +++++
+agd tx bank send validator $GOV1ADDR  12340000000${ATOM_DENOM} --from validator --chain-id agoriclocal --keyring-backend test --yes
+agops vaults open --wantMinted 10000 --giveCollateral 2000 > wantIST
+agops perf satisfaction  --executeOffer wantIST  --from gov1 --keyring-backend test
+
+
+echo +++++ install bundles +++++
+for f in /tmp/bundle-{Z*-upgrade,prober-contract}.json; do
+  echo installing   $f
+  agd tx swingset install-bundle "@$f" \
+    --from gov1 --keyring-backend=test --gas=auto \
+    --chain-id=agoriclocal -bblock --yes
+done
+
+
+echo +++++ Run prober first time +++++
+$upgrade11/zoe-full-upgrade/run-prober.sh
+test_val "$(agd query vstorage data published.prober-asid9a -o jsonlines | jq -r '.value' | jq -r '.values[0]')" "false" "Prober calling zcf.atomicReallocate()"
+
+
+# upgrade zoe to a version that can change which ZCF is installed; tell Zoe to
+# use a new version of ZCF.  THIS MATCHES THE UPGRADE OF THE LIVE CHAIN
+echo +++++ upgrade Zoe and ZCF +++++
+$upgrade11/zoe-full-upgrade/zcf-upgrade-driver.sh
+
+
+echo +++++ Run prober second time +++++
+# Re-run prober test and expect internal atomicRearrange.
+$upgrade11/zoe-full-upgrade/run-prober.sh
+test_val "$(agd query vstorage data published.prober-asid9a -o jsonlines | jq -r '.value' | jq -r '.values[0]')" "true" "Prober called zcf.atomicReallocate()"
+
+test_not_val "$(agops vaults list --from $GOV1ADDR)" "" "gov1 has no vaults"
+
+# open up a vault
+OFFER=$(mktemp -t agops.XXX)
+agops vaults open --wantMinted 7.00 --giveCollateral 11.0 >|"$OFFER"
+agops perf satisfaction --from "$GOV1ADDR" --executeOffer "$OFFER" --keyring-backend=test
+
+# put some IST in
+OFFER=$(mktemp -t agops.XXX)
+agops vaults adjust --vaultId vault3 --giveMinted 1.5 --from $GOV1ADDR --keyring-backend=test >|"$OFFER"
+agops perf satisfaction --from "$GOV1ADDR" --executeOffer "$OFFER" --keyring-backend=test
+
+# add some collateral
+OFFER=$(mktemp -t agops.XXX)
+agops vaults adjust --vaultId vault3 --giveCollateral 2.0 --from $GOV1ADDR --keyring-backend="test" >|"$OFFER"
+agops perf satisfaction --from "$GOV1ADDR" --executeOffer "$OFFER" --keyring-backend=test
+
+# close out
+OFFER=$(mktemp -t agops.XXX)
+agops vaults close --vaultId vault3 --giveMinted 5.75 --from $GOV1ADDR --keyring-backend="test" >|"$OFFER"
+agops perf satisfaction --from "$GOV1ADDR" --executeOffer "$OFFER" --keyring-backend=test
+
+test_val $(agoric follow -l -F :published.vaultFactory.managers.manager0.vaults.vault3 -o jsonlines | jq -r '.vaultState') "closed" "vault3 is closed"
+test_val $(agoric follow -l -F :published.vaultFactory.managers.manager0.vaults.vault3 -o jsonlines | jq -r '.locked.value') "0" "vault3 contains no collateral"
+test_val $(agoric follow -l -F :published.vaultFactory.managers.manager0.vaults.vault3 -o jsonlines | jq -r '.debtSnapshot.debt.value') "0" "vault3 has no debt"
+
+./more_actions.sh
diff --git a/packages/governance/src/contractGovernance/paramManager.js b/packages/governance/src/contractGovernance/paramManager.js
index 23bc725eb5e..73ec3842941 100644
--- a/packages/governance/src/contractGovernance/paramManager.js
+++ b/packages/governance/src/contractGovernance/paramManager.js
@@ -5,7 +5,6 @@ import {
   InstanceHandleShape,
   KeywordShape,
 } from '@agoric/zoe/src/typeGuards.js';
-import { makeBrandedRatioPattern } from '@agoric/ertp/src/typeGuards.js';
 import { assertKeywordName } from '@agoric/zoe/src/cleanProposal.js';
 import { keyEQ, M, mustMatch } from '@agoric/store';
 import { E } from '@endo/eventual-send';
@@ -14,6 +13,7 @@ import { prepareExoClass, makeScalarBigMapStore } from '@agoric/vat-data';
 import { RelativeTimeShape, TimestampShape } from '@agoric/time';
 import { ToFarFunction } from '@endo/captp';
 import { PublicTopicShape } from '@agoric/zoe/src/contractSupport/index.js';
+import { makeBrandedRatioPattern } from '@agoric/zoe/src/contractSupport/ratio.js';
 
 import { ParamTypes } from '../constants.js';
 import { CONTRACT_ELECTORATE } from './governParam.js';
diff --git a/packages/inter-protocol/src/vaultFactory/params.js b/packages/inter-protocol/src/vaultFactory/params.js
index c4badff91e5..00556baa6a4 100644
--- a/packages/inter-protocol/src/vaultFactory/params.js
+++ b/packages/inter-protocol/src/vaultFactory/params.js
@@ -15,6 +15,8 @@ import {
 import { M, makeScalarMapStore } from '@agoric/store';
 import { TimeMath } from '@agoric/time';
 import { prepareExo, provideDurableMapStore } from '@agoric/vat-data';
+import { makeTracer } from '@agoric/internal/src';
+
 import { amountPattern, ratioPattern } from '../contractSupport.js';
 
 export const CHARGING_PERIOD_KEY = 'ChargingPeriod';
@@ -38,6 +40,8 @@ export const vaultDirectorParamTypes = {
 };
 harden(vaultDirectorParamTypes);
 
+const trace = makeTracer('VaultFactory Params');
+
 /**
  * @param {Amount<'set'>} electorateInvitationAmount
  * @param {Amount<'nat'>} minInitialDebt
@@ -258,6 +262,7 @@ export const provideVaultParamManagers = (baggage, makeRecorderKit) => {
   // try to do it again.  This will NOT restore the most recent values; The EC
   // will have to restore the values they want before enabling trading.
   // [...managerArgs.entries()].map(([brand, args]) => makeManager(brand, args));
+  trace('extracting paramManagers from baggage', managerArgs.keys());
   for (const [brand, args] of managerArgs.entries()) {
     makeManager(brand, args);
     managerArgs.delete(brand);
diff --git a/packages/zoe/src/contractSupport/ratio.js b/packages/zoe/src/contractSupport/ratio.js
index 74fb7e97f88..cfdcc66a409 100644
--- a/packages/zoe/src/contractSupport/ratio.js
+++ b/packages/zoe/src/contractSupport/ratio.js
@@ -1,6 +1,6 @@
 import './types.js';
-import { q, Fail } from '@agoric/assert';
-import { AmountMath } from '@agoric/ertp';
+import { Fail, q } from '@agoric/assert';
+import { AmountMath, makeBrandedAmountPattern } from '@agoric/ertp';
 import { assertRecord } from '@endo/marshal';
 import { isNat } from '@endo/nat';
 
@@ -399,3 +399,14 @@ export const ratioToNumber = ratio => {
   const d = Number(ratio.denominator.value);
   return n / d;
 };
+
+/** @param {Ratio} ratio */
+export const makeBrandedRatioPattern = ratio => {
+  const numeratorAmountShape = makeBrandedAmountPattern(ratio.numerator);
+  const denominatorAmountShape = makeBrandedAmountPattern(ratio.denominator);
+  return harden({
+    numerator: numeratorAmountShape,
+    denominator: denominatorAmountShape,
+  });
+};
+harden(makeBrandedRatioPattern);