diff --git a/src/Debug.tsx b/src/Debug.tsx
index ab599a9..eea4ef8 100644
--- a/src/Debug.tsx
+++ b/src/Debug.tsx
@@ -16,7 +16,7 @@ export default function Debug(props: PropsType) {
   const [stateJournalUid, setJournalUid] = React.useState('');
   const [entriesUids, setEntriesUids] = React.useState('');
   const [result, setResult] = React.useState('');
-  const journals = useSelector((state: StoreState) => state.cache.journals.value)!;
+  const journals = useSelector((state: StoreState) => state.cache.journals!);
   const journalEntries = useSelector((state: StoreState) => state.cache.entries);
 
   function handleInputChange(func: (value: string) => void) {
diff --git a/src/SideMenu/index.tsx b/src/SideMenu/index.tsx
index deeb080..369edd7 100644
--- a/src/SideMenu/index.tsx
+++ b/src/SideMenu/index.tsx
@@ -16,7 +16,7 @@ import logo from '../images/logo.svg';
 
 import { routeResolver } from '../App';
 
-import { store, JournalsType, UserInfoData, StoreState, CredentialsData } from '../store';
+import { store, UserInfoData, StoreState, CredentialsData } from '../store';
 import { logout } from '../store/actions';
 
 import * as C from '../constants';
@@ -27,7 +27,6 @@ interface PropsType {
 }
 
 type PropsTypeInner = RouteComponentProps<{}> & PropsType & {
-  journals: JournalsType;
   userInfo: UserInfoData;
   theme: Theme;
 };
@@ -114,7 +113,6 @@ class SideMenu extends React.PureComponent<PropsTypeInner> {
 
 const mapStateToProps = (state: StoreState, _props: PropsType) => {
   return {
-    journals: state.cache.journals,
     userInfo: state.cache.userInfo,
   };
 };
diff --git a/src/SyncGate.tsx b/src/SyncGate.tsx
index a1efda3..ed8f01e 100644
--- a/src/SyncGate.tsx
+++ b/src/SyncGate.tsx
@@ -12,7 +12,6 @@ import { routeResolver } from './App';
 
 import AppBarOverride from './widgets/AppBarOverride';
 import LoadingIndicator from './widgets/LoadingIndicator';
-import PrettyError from './widgets/PrettyError';
 
 import Journals from './Journals';
 import Settings from './Settings';
@@ -22,7 +21,7 @@ import Pim from './Pim';
 import * as EteSync from 'etesync';
 import { CURRENT_VERSION } from 'etesync';
 
-import { store, SettingsType, JournalsType, EntriesType, StoreState, CredentialsData, UserInfoData } from './store';
+import { store, SettingsType, JournalsData, EntriesType, StoreState, CredentialsData, UserInfoData } from './store';
 import { addJournal, fetchAll, fetchEntries, fetchUserInfo, createUserInfo } from './store/actions';
 
 export interface SyncInfoJournal {
@@ -40,7 +39,7 @@ interface PropsType {
 
 type PropsTypeInner = RouteComponentProps<{}> & PropsType & {
   settings: SettingsType;
-  journals: JournalsType;
+  journals: JournalsData;
   entries: EntriesType;
   userInfo: UserInfoData;
   fetchCount: number;
@@ -48,7 +47,7 @@ type PropsTypeInner = RouteComponentProps<{}> & PropsType & {
 
 const syncInfoSelector = createSelector(
   (props: PropsTypeInner) => props.etesync,
-  (props: PropsTypeInner) => props.journals.value!,
+  (props: PropsTypeInner) => props.journals!,
   (props: PropsTypeInner) => props.entries,
   (props: PropsTypeInner) => props.userInfo,
   (etesync, journals, entries, userInfo) => {
@@ -153,11 +152,9 @@ class SyncGate extends React.PureComponent<PropsTypeInner> {
 
   public render() {
     const entryArrays = this.props.entries;
-    const journals = this.props.journals.value;
+    const journals = this.props.journals;
 
-    if (this.props.journals.error) {
-      return <PrettyError error={this.props.journals.error} />;
-    } else {
+    {
       const errors: Array<{journal: string, error: Error}> = [];
       this.props.entries.forEach((entry, journal) => {
         if (entry.error) {
diff --git a/src/store/construct.ts b/src/store/construct.ts
index e760df7..67848c8 100644
--- a/src/store/construct.ts
+++ b/src/store/construct.ts
@@ -7,8 +7,8 @@ import { List, Map as ImmutableMap } from 'immutable';
 
 import * as EteSync from 'etesync';
 import {
-  JournalsData, FetchType, EntriesData, EntriesFetchRecord, UserInfoData, JournalsFetchRecord,
-  CredentialsDataRemote, JournalsType, EntriesType, SettingsType,
+  JournalsData, FetchType, EntriesData, EntriesFetchRecord, UserInfoData,
+  CredentialsDataRemote, EntriesType, SettingsType,
   fetchCount, journals, entries, credentials, userInfo, settingsReducer, encryptionKeyReducer, errorsReducer,
 } from './reducers';
 
@@ -18,7 +18,7 @@ export interface StoreState {
   settings: SettingsType;
   encryptionKey: {key: string};
   cache: {
-    journals: JournalsType;
+    journals: JournalsData;
     entries: EntriesType;
     userInfo: UserInfoData;
   };
@@ -49,19 +49,19 @@ const journalsSerialize = (state: JournalsData) => {
   return state.map((x, _uid) => x.serialize()).toJS();
 };
 
-const journalsDeserialize = (state: {}) => {
+const journalsDeserialize = (state: []) => {
   if (state === null) {
     return null;
   }
 
-  const newState = new Map<string, EteSync.Journal>();
+  const newState = ImmutableMap<string, EteSync.Journal>().asMutable();
   Object.keys(state).forEach((uid) => {
     const x = state[uid];
     const ret = new EteSync.Journal({ uid }, x.version);
     ret.deserialize(x);
     newState.set(uid, ret);
   });
-  return ImmutableMap(newState);
+  return newState.asImmutable();
 };
 
 const entriesSerialize = (state: FetchType<EntriesData>) => {
@@ -110,7 +110,7 @@ const cacheSerialize = (state: any, key: string) => {
     });
     return ret;
   } else if (key === 'journals') {
-    return journalsSerialize(state.value);
+    return journalsSerialize(state);
   } else if (key === 'userInfo') {
     return userInfoSerialize(state);
   }
@@ -126,7 +126,7 @@ const cacheDeserialize = (state: any, key: string) => {
     });
     return ImmutableMap(ret);
   } else if (key === 'journals') {
-    return new JournalsFetchRecord({ value: journalsDeserialize(state) });
+    return journalsDeserialize(state);
   } else if (key === 'userInfo') {
     return userInfoDeserialize(state);
   }
diff --git a/src/store/reducers.ts b/src/store/reducers.ts
index df98b19..3c5a3a0 100644
--- a/src/store/reducers.ts
+++ b/src/store/reducers.ts
@@ -1,4 +1,4 @@
-import { Action, ActionFunctionAny, combineActions, handleAction, handleActions } from 'redux-actions';
+import { Action, ActionMeta, ActionFunctionAny, combineActions, handleAction, handleActions } from 'redux-actions';
 import { shallowEqual } from 'react-redux';
 
 import { List, Map as ImmutableMap, Record } from 'immutable';
@@ -31,14 +31,7 @@ function fetchTypeRecord<T>() {
   });
 }
 
-interface BaseModel {
-  uid: string;
-}
-
 export type JournalsData = ImmutableMap<string, EteSync.Journal>;
-export const JournalsFetchRecord = fetchTypeRecord<JournalsData>();
-export type JournalsType = FetchType<JournalsData>;
-export type JournalsTypeImmutable = Record<JournalsType>;
 
 export type EntriesData = List<EteSync.Entry>;
 export const EntriesFetchRecord = fetchTypeRecord<EntriesData>();
@@ -112,105 +105,100 @@ export const credentials = handleActions(
   {} as CredentialsDataRemote
 );
 
-const setMapModelReducer = <T extends Record<any>, V extends BaseModel>(state: T, action: any) => {
-  const newState = fetchTypeIdentityReducer(state, action);
-  // Compare the states and see if they are really different
-  const newItems = newState.get('value', null);
+function fetchCreateEntriesReducer(state: EntriesTypeImmutable, action: any) {
+  const prevState = state.get(action.meta.journal);
+  const extend = action.meta.prevUid != null;
+  return state.set(action.meta.journal,
+    fetchTypeIdentityReducer(prevState, action, extend));
+}
+
+export const entries = handleActions(
+  {
+    [actions.fetchEntries.toString()]: fetchCreateEntriesReducer,
+    [actions.addEntries.toString()]: fetchCreateEntriesReducer,
+    [actions.addJournal.toString()]: (state: EntriesTypeImmutable, action: any) => {
+      const journal = action.meta.item.uid;
+      const prevState = state.get(journal);
+      return state.set(journal,
+        fetchTypeIdentityReducer(prevState, { payload: [] }, false));
+    },
+  },
+  ImmutableMap({})
+);
 
-  if (!newItems) {
-    return newState;
+const setMapModelReducer = (state: JournalsData, action: Action<EteSync.Journal[]>) => {
+  if (action.error || !action.payload) {
+    return state;
   }
 
-  const ret = new Map<string, V>();
+  state = state ?? ImmutableMap<string, EteSync.Journal>().asMutable();
+  const old = state.asMutable();
 
-  newItems.forEach((item: V) => {
-    ret.set(item.uid, item);
-  });
+  return state.withMutations((ret) => {
+    const items = action.payload!;
+    for (const item of items) {
+      const current = old.get(item.uid);
+      if (!current || !shallowEqual(current.serialize(), item.serialize())) {
+        ret.set(item.uid, item);
+      }
 
-  return newState.set('value', ImmutableMap(ret));
+      if (current) {
+        old.delete(item.uid);
+      }
+    }
+
+    // Delete all the items that were deleted remotely (not handled above).
+    for (const uid of old.keys()) {
+      ret.delete(uid);
+    }
+  });
 };
 
-const addEditMapModelReducer = <T extends Record<any>, V extends BaseModel>(state: T, action: any) => {
+const addEditMapModelReducer = (state: JournalsData, action: ActionMeta<EteSync.Journal, { item: EteSync.Journal }>) => {
   if (action.error) {
-    return state.set('error', action.payload);
+    return state;
   } else {
     let payload = (action.payload === undefined) ? null : action.payload;
     payload = (action.meta === undefined) ? payload : action.meta.item;
 
-    state = state.set('error', undefined);
-
-    if (action.payload === undefined) {
+    if (!payload) {
       return state;
     }
 
-    const item = payload as V;
-    let value = state.get('value', null)!;
-    value = value.set(item.uid, item);
-    return state.set('value', value);
+    const item = payload;
+    return state.set(item.uid, item);
   }
 };
 
-const deleteMapModelReducer = <T extends Record<any>>(state: T, action: any) => {
+const deleteMapModelReducer = (state: JournalsData, action: ActionMeta<EteSync.Journal, { item: EteSync.Journal }>) => {
   if (action.error) {
-    return state.set('error', action.payload);
+    return state;
   } else {
     let payload = (action.payload === undefined) ? null : action.payload;
     payload = (action.meta === undefined) ? payload : action.meta.item;
 
-    state = state.set('error', undefined);
-
-    if (action.payload === undefined) {
+    if (!payload) {
       return state;
     }
 
     const uid = payload.uid;
-    let value = state.get('value', null)!;
-    value = value.delete(uid);
-    return state.set('value', value);
+    return state.delete(uid);
   }
 };
 
-const mapReducerActionsMapCreator = <T extends Record<any>, V extends BaseModel>(actionName: string) => {
-  const setsReducer = (state: T, action: any) => setMapModelReducer<T, V>(state, action);
-  const addEditReducer = (state: T, action: any) => addEditMapModelReducer<T, V>(state, action);
-  const deleteReducer = (state: T, action: any) => deleteMapModelReducer<T>(state, action);
-
-  return {
-    [actions['fetchList' + actionName].toString() as string]: setsReducer,
-    [actions['add' + actionName].toString() as string]: addEditReducer,
-    [actions['update' + actionName].toString() as string]: addEditReducer,
-    [actions['delete' + actionName].toString() as string]: deleteReducer,
-  };
-};
-
-function fetchCreateEntriesReducer(state: EntriesTypeImmutable, action: any) {
-  const prevState = state.get(action.meta.journal);
-  const extend = action.meta.prevUid != null;
-  return state.set(action.meta.journal,
-    fetchTypeIdentityReducer(prevState, action, extend));
-}
-
-export const entries = handleActions(
+export const journals = handleActions(
   {
-    [actions.fetchEntries.toString()]: fetchCreateEntriesReducer,
-    [actions.addEntries.toString()]: fetchCreateEntriesReducer,
-    [actions.addJournal.toString()]: (state: EntriesTypeImmutable, action: any) => {
-      const journal = action.meta.item.uid;
-      const prevState = state.get(journal);
-      return state.set(journal,
-        fetchTypeIdentityReducer(prevState, { payload: [] }, false));
+    [actions.fetchListJournal.toString()]: setMapModelReducer as any,
+    [actions.addJournal.toString()]: addEditMapModelReducer,
+    [actions.updateJournal.toString()]: addEditMapModelReducer,
+    [actions.deleteJournal.toString()]: deleteMapModelReducer,
+    [actions.logout.toString()]: (state: JournalsData, _action: any) => {
+      return state.clear();
     },
   },
   ImmutableMap({})
 );
 
-export const journals = handleActions(
-  {
-    ...mapReducerActionsMapCreator<JournalsTypeImmutable, EteSync.Journal>('Journal'),
-  },
-  new JournalsFetchRecord()
-);
-
 export const userInfo = handleActions(
   {
     [combineActions(
diff --git a/tsconfig.json b/tsconfig.json
index e4bdb45..01d1795 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -11,6 +11,7 @@
     "allowJs": true,
     "jsx": "preserve",
     "rootDir": "src",
+    "downlevelIteration": true,
     "forceConsistentCasingInFileNames": true,
     "noUnusedLocals": true,
     "moduleResolution": "node",