Clear AccountTracker accounts and CachedBalances on createNewVaultAndRestore (#9023)

app/scripts/controllers/cached-balances.js

@@ -65,6 +65,14 @@ export default class CachedBalancesController {
     return balancesToCache
   }
 
+  /**
+   * Removes cachedBalances
+   */
+
+  clearCachedBalances () {
+    this.store.updateState({ cachedBalances: {} })
+  }
+
   /**
    * Sets up listeners and subscriptions which should trigger an update of cached balances. These updates will
    * happen when the current account changes. Which happens on block updates, as well as on network and account

app/scripts/lib/account-tracker.js

@@ -151,6 +151,14 @@ export default class AccountTracker {
     this.store.updateState({ accounts })
   }
 
+  /**
+   * Removes all addresses and associated balances
+   */
+
+  clearAccounts () {
+    this.store.updateState({ accounts: {} })
+  }
+
   /**
    * Given a block, updates this AccountTracker's currentBlockGasLimit, and then updates each local account's balance
    * via EthQuery

app/scripts/metamask-controller.js

@@ -631,6 +631,12 @@ export default class MetamaskController extends EventEmitter {
       // clear permissions
       this.permissionsController.clearPermissions()
 
+      // clear accounts in accountTracker
+      this.accountTracker.clearAccounts()
+
+      // clear cachedBalances
+      this.cachedBalancesController.clearCachedBalances()
+
       // clear unapproved transactions
       this.txController.txStateManager.clearUnapprovedTxs()