diff --git a/src/addons/mod/assign/components/index/index.ts b/src/addons/mod/assign/components/index/index.ts
index 83b84b236..edf0e7144 100644
--- a/src/addons/mod/assign/components/index/index.ts
+++ b/src/addons/mod/assign/components/index/index.ts
@@ -407,8 +407,8 @@ export class AddonModAssignIndexComponent extends CoreCourseModuleMainActivityCo
      *
      * @return Promise resolved when done.
      */
-    protected async sync(): Promise<void> {
-        await AddonModAssignSync.syncAssign(this.assign!.id);
+    protected sync(): Promise<AddonModAssignSyncResult> {
+        return AddonModAssignSync.syncAssign(this.assign!.id);
     }
 
     /**
diff --git a/src/addons/mod/assign/pages/edit/edit.ts b/src/addons/mod/assign/pages/edit/edit.ts
index 43dd2a858..98884b13e 100644
--- a/src/addons/mod/assign/pages/edit/edit.ts
+++ b/src/addons/mod/assign/pages/edit/edit.ts
@@ -235,12 +235,12 @@ export class AddonModAssignEditPage implements OnInit, OnDestroy, CanLeave {
      * @param inputData The input data.
      * @return Promise resolved with the data to submit.
      */
-    protected prepareSubmissionData(inputData: CoreFormFields): Promise<AddonModAssignSavePluginData> {
+    protected async prepareSubmissionData(inputData: CoreFormFields): Promise<AddonModAssignSavePluginData> {
         // If there's offline data, always save it in offline.
         this.saveOffline = this.hasOffline;
 
         try {
-            return AddonModAssignHelper.prepareSubmissionPluginData(
+            return await AddonModAssignHelper.prepareSubmissionPluginData(
                 this.assign!,
                 this.userSubmission,
                 inputData,
@@ -251,7 +251,7 @@ export class AddonModAssignEditPage implements OnInit, OnDestroy, CanLeave {
                 // Cannot submit in online, prepare for offline usage.
                 this.saveOffline = true;
 
-                return AddonModAssignHelper.prepareSubmissionPluginData(
+                return await AddonModAssignHelper.prepareSubmissionPluginData(
                     this.assign!,
                     this.userSubmission,
                     inputData,
diff --git a/src/addons/mod/data/components/index/index.ts b/src/addons/mod/data/components/index/index.ts
index 4f27405a5..c99612586 100644
--- a/src/addons/mod/data/components/index/index.ts
+++ b/src/addons/mod/data/components/index/index.ts
@@ -514,8 +514,8 @@ export class AddonModDataIndexComponent extends CoreCourseModuleMainActivityComp
      *
      * @return Promise resolved when done.
      */
-    protected async sync(): Promise<void> {
-        await AddonModDataPrefetchHandler.sync(this.module, this.courseId);
+    protected sync(): Promise<AddonModDataSyncResult> {
+        return AddonModDataPrefetchHandler.sync(this.module, this.courseId);
     }
 
     /**
diff --git a/src/addons/mod/survey/components/index/index.ts b/src/addons/mod/survey/components/index/index.ts
index 38db91dd8..8979f9e03 100644
--- a/src/addons/mod/survey/components/index/index.ts
+++ b/src/addons/mod/survey/components/index/index.ts
@@ -233,8 +233,8 @@ export class AddonModSurveyIndexComponent extends CoreCourseModuleMainActivityCo
      *
      * @return Promise resolved when done.
      */
-    protected async sync(): Promise<void> {
-        await AddonModSurveySync.syncSurvey(this.survey!.id, this.currentUserId);
+    protected sync(): Promise<AddonModSurveySyncResult> {
+        return AddonModSurveySync.syncSurvey(this.survey!.id, this.currentUserId);
     }
 
     /**