diff --git a/packages/zoe/src/contractFacet.js b/packages/zoe/src/contractFacet.js
index 69108260394..94045bac707 100644
--- a/packages/zoe/src/contractFacet.js
+++ b/packages/zoe/src/contractFacet.js
@@ -11,7 +11,7 @@ import { assert, details, q } from '@agoric/assert';
 import { E } from '@agoric/eventual-send';
 import { isOfferSafe } from './offerSafety';
 import { areRightsConserved } from './rightsConservation';
-import { assertKeywordName, cleanProposal, getKeywords } from './cleanProposal';
+import { assertKeywordName, getKeywords } from './cleanProposal';
 import { makeContractTables } from './state';
 import { filterObj, filterFillAmounts, tuple } from './objArrayConversion';
 import { evalContractBundle } from './evalContractCode';
@@ -39,7 +39,7 @@ export function buildRootObject(_vatPowers) {
     'brandKeywordRecord',
   );
   /**
-   * @param {InstanceRecord} instanceRecord
+   * @param {InstanceRecord & ZcfInstanceRecord} instanceRecord
    */
   const visibleInstanceRecord = instanceRecord =>
     filterObj(instanceRecord, visibleInstanceRecordFields);
@@ -56,7 +56,7 @@ export function buildRootObject(_vatPowers) {
   /** @param {OfferRecord} offerRecord */
   const removeAmountsAndNotifier = offerRecord =>
     filterObj(offerRecord, ['handle', 'instanceHandle', 'proposal']);
-  /** @param {IssuerRecord} issuerRecord */
+  /** @param {IssuerRecord&PrivateIssuerRecord} issuerRecord */
   const removePurse = issuerRecord =>
     filterObj(issuerRecord, ['issuer', 'brand', 'amountMath']);
 
@@ -172,6 +172,9 @@ export function buildRootObject(_vatPowers) {
    * Create the contract-facing Zoe facet.
    *
    * @param {ZoeService} zoeService
+   * @param {InstanceRecord & ZcfInstanceRecord} instanceRecord
+   * @param {Issuer} inviteIssuer
+   * @param {ZoeForZcf} zoeForZcf
    * @returns {ContractFacet}
    */
   const makeContractFacet = (
@@ -240,7 +243,7 @@ export function buildRootObject(_vatPowers) {
       getIssuerForBrand: brand => issuerTable.get(brand).issuer,
       getBrandForIssuer: issuer => issuerTable.brandFromIssuer(issuer),
       getAmountMath: getAmountMathForBrand,
-      getVatAdmin: instanceRecord.adminNode,
+      getVatAdmin: () => instanceRecord.adminNode,
     };
     return harden(contractFacet);
   };
@@ -257,16 +260,15 @@ export function buildRootObject(_vatPowers) {
           finish: () => {},
         });
 
-        const cleanedProposal = cleanProposal(getAmountMathForBrand, proposal);
         const offerRecord = {
           instanceHandle,
-          proposal: cleanedProposal,
+          proposal,
           currentAllocation: allocation,
           notifier: undefined,
           updater: ignoringUpdater,
         };
 
-        const { exit } = cleanedProposal;
+        const { exit } = proposal;
         const [exitKind] = Object.getOwnPropertyNames(exit);
 
         /** @type {CompleteObj | undefined} */
diff --git a/packages/zoe/src/internal-types.js b/packages/zoe/src/internal-types.js
index 1273f378314..b478d5eb6ee 100644
--- a/packages/zoe/src/internal-types.js
+++ b/packages/zoe/src/internal-types.js
@@ -17,7 +17,7 @@
  * @typedef {Object} ZcfForZoe
  * The facet ZCF presents to Zoe.
  *
- * @property {(offerHandle: OfferHandle, proposal: Proposal, allocation: Allocation) => (CompleteObj | undefined)} addOffer
+ * @property {(offerHandle: OfferHandle, proposal: ProposalRecord, allocation: Allocation) => (CompleteObj | undefined)} addOffer
  * Add a single offer to this contract instance.
  */
 
@@ -40,7 +40,7 @@
  * @typedef StartContractParams
  * @property {ZoeService} zoeService - The canonical Zoe service in case the contract wants it
  * @property {SourceBundle} bundle an object containing source code and moduleFormat
- * @property {InstanceRecord} instanceData, fields for the instanceRecord
+ * @property {InstanceRecord&InternalInstanceRecord} instanceData, fields for the instanceRecord
  * @property {ZoeForZcf} zoeForZcf - An inner facet of Zoe for the contractFacet's use
  * @property {Issuer} inviteIssuer, Zoe's inviteIssuer, for the contract to use
  *
@@ -73,6 +73,12 @@
  * @property {Promise<ZcfForZoe>} zcfForZoe - the inner facet for Zoe to use
  * @property {Set<OfferHandle>} offerHandles - the offer handles for this instance
  *
+ * @typedef {Object} ZcfInstanceRecord
+ * @property {VatAdmin} adminNode
+ *
+ * @typedef {Object} PrivateIssuerRecord
+ * @property {Purse} purse
+ *
  * @typedef {Object} PrivateOfferRecord
  * @property {Allocation} currentAllocation - the allocation corresponding to this offer
  * @property {import('@agoric/notifier').Notifier<Allocation>=} notifier - the notifier for allocation changes
diff --git a/packages/zoe/src/state.js b/packages/zoe/src/state.js
index 064a85921d8..c9fdda7183c 100644
--- a/packages/zoe/src/state.js
+++ b/packages/zoe/src/state.js
@@ -182,7 +182,7 @@ const makeIssuerTable = (withPurses = true) => {
   /**
    * TODO: make sure this validate function protects against malicious
    * misshapen objects rather than just a general check.
-   * @type {Validator<IssuerRecord & { purse?: Purse }>}
+   * @type {Validator<IssuerRecord & PrivateIssuerRecord>}
    */
   const validateSomewhat = makeValidateProperties(
     withPurses
diff --git a/packages/zoe/src/types.js b/packages/zoe/src/types.js
index 566d886822d..3f28aea971f 100644
--- a/packages/zoe/src/types.js
+++ b/packages/zoe/src/types.js
@@ -292,7 +292,7 @@
  * when the issuer is added and ready.
  * @param {Promise<Issuer>|Issuer} issuerP Promise for issuer
  * @param {Keyword} keyword Keyword for added issuer
- * @returns {Promise<Omit<IssuerRecord,'purse'>>} Issuer is added and ready
+ * @returns {Promise<IssuerRecord>} Issuer is added and ready
  *
  * @typedef {Record<string,function>} PublicAPI
  *
@@ -342,7 +342,6 @@
  * @typedef {Object} IssuerRecord
  * @property {Brand} brand
  * @property {Issuer} issuer
- * @property {Purse} purse
  * @property {AmountMath} amountMath
  *
  * @typedef {Object} InstallationRecord