diff --git a/repo/task-quartz-impl/src/main/java/com/evolveum/midpoint/task/quartzimpl/TaskManagerQuartzImpl.java b/repo/task-quartz-impl/src/main/java/com/evolveum/midpoint/task/quartzimpl/TaskManagerQuartzImpl.java
index cadb8598f2f..cb6330437a8 100644
--- a/repo/task-quartz-impl/src/main/java/com/evolveum/midpoint/task/quartzimpl/TaskManagerQuartzImpl.java
+++ b/repo/task-quartz-impl/src/main/java/com/evolveum/midpoint/task/quartzimpl/TaskManagerQuartzImpl.java
@@ -481,6 +481,7 @@ public void resumeTask(Task task, OperationResult parentResult) throws ObjectNot
             result.recordFatalError(message);
             return;
         }
+        clearTaskOperationResult(task, parentResult);           // see a note on scheduleTaskNow
         resumeOrUnpauseTask(task, result);
     }
 
@@ -1350,9 +1351,16 @@ public void deleteNode(String nodeOid, OperationResult result) throws SchemaExce
 
     @Override
     public void scheduleTaskNow(Task task, OperationResult parentResult) throws SchemaException, ObjectNotFoundException {
+        /*
+         *  Note: we clear task operation result because this is what a user would generally expect when re-running a task
+         *  (MID-1920). We do NOT do that on each task run e.g. to have an ability to see last task execution status
+         *  during a next task run. (When the interval between task runs is too short, e.g. for live sync tasks.)
+         */
         if (task.isClosed()) {
+            clearTaskOperationResult(task, parentResult);
             executionManager.reRunClosedTask(task, parentResult);
         } else if (task.getExecutionStatus() == TaskExecutionStatus.RUNNABLE) {
+            clearTaskOperationResult(task, parentResult);
             scheduleRunnableTaskNow(task, parentResult);
         } else {
             String message = "Task " + task + " cannot be run now, because it is not in RUNNABLE nor CLOSED state.";
@@ -1362,6 +1370,12 @@ public void scheduleTaskNow(Task task, OperationResult parentResult) throws Sche
         }
     }
 
+    private void clearTaskOperationResult(Task task, OperationResult parentResult) throws SchemaException, ObjectNotFoundException {
+        OperationResult emptyTaskResult = new OperationResult("run");
+        emptyTaskResult.setStatus(OperationResultStatus.IN_PROGRESS);
+        task.setResultImmediate(emptyTaskResult, parentResult);
+    }
+
     public void scheduleRunnableTaskNow(Task task, OperationResult parentResult) {
         executionManager.scheduleRunnableTaskNow(task, parentResult);
     }