Concat new column data with existing data

src/containers/EventCardsContainer.tsx

@@ -41,6 +41,7 @@ export class EventCardsContainer extends PureComponent<
 
       if (Array.isArray(events)) {
         const orderedEvents = _(events)
+          .concat(this.state.events)
           .uniqBy('id')
           .orderBy(['updated_at', 'created_at'], ['desc', 'desc'])
           .value()

src/containers/NotificationCardsContainer.tsx

@@ -47,6 +47,7 @@ export class NotificationCardsContainer extends PureComponent<
       if (Array.isArray(notifications)) {
         this.setState({
           notifications: _(notifications)
+            .concat(this.state.notifications)
             .uniqBy('id')
             .orderBy(
               ['unread', 'updated_at', 'created_at'],