diff --git a/packages/deploy-script-support/src/offer.js b/packages/deploy-script-support/src/offer.js
index 8ba945f20e4..8a7ae23b130 100644
--- a/packages/deploy-script-support/src/offer.js
+++ b/packages/deploy-script-support/src/offer.js
@@ -19,7 +19,7 @@ import { AmountMath } from '@agoric/ertp/src/amountMath.js';
  * @param {ERef<any>} walletAdmin - an internal type of the
  * wallet, not defined here
  * @param {ERef<ZoeService>} zoe
- * @param {ERef<Purse>} zoeInvitationPurse
+ * @param {ERef<Purse<'set'>>} zoeInvitationPurse
  */
 export const makeOfferAndFindInvitationAmount = (
   walletAdmin,
@@ -28,7 +28,7 @@ export const makeOfferAndFindInvitationAmount = (
 ) => {
   /**
    * @param {Record<string, any>} invitationDetailsCriteria
-   * @returns {Promise<Amount>} invitationAmount
+   * @returns {Promise<Amount<'set'>>} invitationAmount
    */
   const findInvitationAmount = async invitationDetailsCriteria => {
     const invitationAmount = await E(zoeInvitationPurse).getCurrentAmount();
diff --git a/packages/smart-wallet/src/offerWatcher.js b/packages/smart-wallet/src/offerWatcher.js
index 269830cb73f..affcc45984a 100644
--- a/packages/smart-wallet/src/offerWatcher.js
+++ b/packages/smart-wallet/src/offerWatcher.js
@@ -104,17 +104,29 @@ const offerWatcherGuard = harden({
   }),
 });
 
+/**
+ * @param {import('@agoric/vat-data').Baggage} baggage
+ */
 export const prepareOfferWatcher = baggage => {
   return prepareExoClassKit(
     baggage,
     'OfferWatcher',
     offerWatcherGuard,
-    (walletHelper, deposit, offerSpec, address, iAmount, seatRef) => ({
+    /**
+     *
+     * @param {*} walletHelper
+     * @param {*} deposit
+     * @param {import('./offers.js').OfferSpec} offerSpec
+     * @param {string} address
+     * @param {Amount<'set'>} invitationAmount
+     * @param {UserSeat} seatRef
+     */
+    (walletHelper, deposit, offerSpec, address, invitationAmount, seatRef) => ({
       walletHelper,
       deposit,
       status: offerSpec,
       address,
-      invitationAmount: iAmount,
+      invitationAmount,
       seatRef,
     }),
     {
diff --git a/packages/smart-wallet/src/smartWallet.js b/packages/smart-wallet/src/smartWallet.js
index 0721f21a31d..61577e0a29b 100644
--- a/packages/smart-wallet/src/smartWallet.js
+++ b/packages/smart-wallet/src/smartWallet.js
@@ -173,7 +173,7 @@ const trace = makeTracer('SmrtWlt');
  *   paymentQueues: MapStore<Brand, Array<Payment>>,
  *   offerToInvitationMakers: MapStore<string, import('./types.js').InvitationMakers>,
  *   offerToPublicSubscriberPaths: MapStore<string, Record<string, string>>,
- *   offerToUsedInvitation: MapStore<string, Amount>,
+ *   offerToUsedInvitation: MapStore<string, Amount<'set'>>,
  *   purseBalances: MapStore<Purse, Amount>,
  *   updateRecorderKit: import('@agoric/zoe/src/contractSupport/recorder.js').RecorderKit<UpdateRecord>,
  *   currentRecorderKit: import('@agoric/zoe/src/contractSupport/recorder.js').RecorderKit<CurrentWalletRecord>,
@@ -643,24 +643,42 @@ export const prepareSmartWallet = (baggage, shared) => {
             const offerSpec = liveOffers.get(seatId);
             const seat = liveOfferSeats.get(seatId);
 
-            const invitation = invitationFromSpec(offerSpec.invitationSpec);
-            watcherPromises.push(
-              E.when(
-                E(invitationIssuer).getAmountOf(invitation),
-                invitationAmount => {
-                  const watcher = makeOfferWatcher(
-                    facets.helper,
-                    facets.deposit,
-                    offerSpec,
-                    address,
-                    invitationAmount,
-                    seat,
-                  );
-                  return watchOfferOutcomes(watcher, seat);
-                },
-              ),
-            );
+            const watchOutcome = (async () => {
+              await null;
+              let invitationAmount = state.offerToUsedInvitation.get(
+                // @ts-expect-error older type allowed number
+                offerSpec.id,
+              );
+              if (invitationAmount) {
+                facets.helper.logWalletInfo(
+                  'recovered invitation amount for offer',
+                  offerSpec.id,
+                );
+              } else {
+                facets.helper.logWalletInfo(
+                  'inferring invitation amount for offer',
+                  offerSpec.id,
+                );
+                const tempInvitation = invitationFromSpec(
+                  offerSpec.invitationSpec,
+                );
+                invitationAmount =
+                  await E(invitationIssuer).getAmountOf(tempInvitation);
+                void E(invitationIssuer).burn(tempInvitation);
+              }
+
+              const watcher = makeOfferWatcher(
+                facets.helper,
+                facets.deposit,
+                offerSpec,
+                address,
+                invitationAmount,
+                seat,
+              );
+              return watchOfferOutcomes(watcher, seat);
+            })();
             trace(`Repaired seat ${seatId} for wallet ${address}`);
+            watcherPromises.push(watchOutcome);
           }
 
           await Promise.all(watcherPromises);
@@ -1102,9 +1120,9 @@ export const prepareSmartWallet = (baggage, shared) => {
             },
           });
         },
+        // TODO remove this and repairUnwatchedSeats once the repair has taken place.
         /**
-         * one-time use function. Remove this and repairUnwatchedSeats once the
-         * repair has taken place.
+         * To be called once ever per wallet.
          *
          * @param {object} key
          */
@@ -1115,8 +1133,12 @@ export const prepareSmartWallet = (baggage, shared) => {
             return;
           }
 
-          void facets.helper.repairUnwatchedSeats();
-          void facets.helper.repairUnwatchedPurses();
+          facets.helper.repairUnwatchedSeats().catch(e => {
+            console.error('repairUnwatchedSeats rejection', e);
+          });
+          facets.helper.repairUnwatchedPurses().catch(e => {
+            console.error('repairUnwatchedPurses rejection', e);
+          });
           trace(`repaired wallet ${state.address}`);
         },
       },