diff --git a/src/legacy/core_plugins/kibana/public/discover/np_ready/angular/get_painless_error.ts b/src/legacy/core_plugins/kibana/public/discover/np_ready/angular/get_painless_error.ts
index 2bbeea9d675c7..100d9cdac133b 100644
--- a/src/legacy/core_plugins/kibana/public/discover/np_ready/angular/get_painless_error.ts
+++ b/src/legacy/core_plugins/kibana/public/discover/np_ready/angular/get_painless_error.ts
@@ -23,9 +23,9 @@ import { get } from 'lodash';
 export function getPainlessError(error: Error) {
   const rootCause: Array<{ lang: string; script: string }> | undefined = get(
     error,
-    'resp.error.root_cause'
+    'body.attributes.error.root_cause'
   );
-  const message: string = get(error, 'message');
+  const message: string = get(error, 'body.message');
 
   if (!rootCause) {
     return;
diff --git a/src/plugins/data/public/search/search_strategy/default_search_strategy.test.ts b/src/plugins/data/public/search/search_strategy/default_search_strategy.test.ts
index 80ab7ceb8870f..1915645ad2df2 100644
--- a/src/plugins/data/public/search/search_strategy/default_search_strategy.test.ts
+++ b/src/plugins/data/public/search/search_strategy/default_search_strategy.test.ts
@@ -117,8 +117,7 @@ describe('defaultSearchStrategy', function() {
     test('should call new search service', () => {
       const config = getConfigStub();
       search({ ...searchArgs, config });
-      expect(searchMock).toHaveBeenCalled();
-      expect(newSearchMock).toHaveBeenCalledTimes(0);
+      expect(newSearchMock).toHaveBeenCalledTimes(1);
     });
 
     test('should properly abort with new search service', async () => {
diff --git a/src/plugins/data/public/search/search_strategy/default_search_strategy.ts b/src/plugins/data/public/search/search_strategy/default_search_strategy.ts
index 6dde6bfe22e4a..6fcb1e6b3e8d2 100644
--- a/src/plugins/data/public/search/search_strategy/default_search_strategy.ts
+++ b/src/plugins/data/public/search/search_strategy/default_search_strategy.ts
@@ -74,24 +74,17 @@ function search({
 }: SearchStrategySearchParams) {
   const abortController = new AbortController();
   const searchParams = getSearchParams(config, esShardTimeout);
-  const es = searchService.__LEGACY.esClient;
   const promises = searchRequests.map(({ index, body }) => {
-    const searching = es.search({ index: index.title || index, body, ...searchParams });
-    abortController.signal.addEventListener('abort', searching.abort);
-    return searching.catch(({ response }: any) => JSON.parse(response));
-    /*
-     * Once #44302 is resolved, replace the old implementation with this one -
-     * const params = {
-     *   index: index.title || index,
-     *   body,
-     *   ...searchParams,
-     * };
-     * const { signal } = abortController;
-     * return searchService
-     *   .search({ params }, { signal })
-     *   .toPromise()
-     *   .then(({ rawResponse }) => rawResponse);
-     */
+    const params = {
+      index: index.title || index,
+      body,
+      ...searchParams,
+    };
+    const { signal } = abortController;
+    return searchService
+      .search({ params }, { signal })
+      .toPromise()
+      .then(({ rawResponse }) => rawResponse);
   });
   return {
     searching: Promise.all(promises),