The creator.saveSurveyFunc is not raised when an existing Logic rule …

packages/survey-creator-core/src/components/tabs/logic-actions-model.ts

@@ -221,20 +221,24 @@ export class LogicActionTriggerModel extends LogicActionModelBase {
     if (!createNewAction) {
       const el = this.initialLogicAction.element;
       const srcJson = this.panelObj.toJSON();
+      const destJson = el.toJSON();
       const srcKeys = Object.keys(srcJson);
-      const destKeys = Object.keys(el.toJSON());
+      const destKeys = Object.keys(destJson);
       const propsToDelete = [];
-      for(let i = 0; i < destKeys.length; i ++) {
-        const key = destKeys[i];
+      const propsToSet = [];
+      destKeys.forEach(key => {
         if(srcKeys.indexOf(key) < 0) {
           propsToDelete.push(key);
         }
-      }
-      el.fromJSON(srcJson);
+      });
+      srcKeys.forEach(key => {
+        if(!Helpers.isTwoValueEquals(srcJson[key], destJson[key])) {
+          propsToSet.push(key);
+        }
+      });
+      propsToDelete.forEach(prop => el.resetPropertyValue(prop));
+      propsToSet.forEach(prop => el[prop] = srcJson[prop]);
       this.currentLogicAction = this.initialLogicAction;
-      for(let i = 0; i < propsToDelete.length; i ++) {
-        el[propsToDelete[i]] = undefined;
-      }
       return false;
     }
     this.currentLogicAction = new SurveyLogicAction(this.logicType, this.panelObj, survey);

packages/survey-creator-core/tests/tabs/logic.tests.ts

@@ -3266,6 +3266,46 @@ test("Test questions css in an action panel", () => {
   checkFunc(3, "completedHtmlOnCondition", "html", false);
 });
 
+test("Run modified on changing runExpression", () => {
+  const survey = new SurveyModel({
+    elements: [
+      { type: "text", name: "q1" },
+      { type: "text", name: "q2" }
+    ],
+    triggers: [
+      {
+        type: "runexpression",
+        expression: "{q1} = 3",
+        runExpression: "{q1} + 3"
+      }
+    ]
+  });
+  const logic = new SurveyLogic(survey);
+  expect(logic.items).toHaveLength(1);
+  const editor = new LogicItemEditor(logic.items[0]);
+  expect(editor.panels).toHaveLength(1);
+  expect(editor.panels[0].getQuestionByName("elementSelector").visible).toBeFalsy();
+  const panelTrigger = <PanelModel>(editor.panels[0].getElementByName("triggerEditorPanel"));
+  expect(panelTrigger).toBeTruthy();
+  expect(panelTrigger.visible).toBeTruthy();
+  const runExpressionQuestion = panelTrigger.getQuestionByName("runExpression");
+  expect(runExpressionQuestion.value).toEqual("{q1} + 3");
+  const changes = new Array<any>();
+  survey.onPropertyValueChangedCallback = (
+    name: string,
+    oldValue: any,
+    newValue: any
+  ) => {
+    changes.push({ name: name, value: newValue });
+  };
+  runExpressionQuestion.value = "{q1} + 4";
+  expect(changes).toHaveLength(0);
+  editor.apply();
+  expect(changes).toHaveLength(1);
+  expect(changes[0].name).toEqual("runExpression");
+  expect(changes[0].value).toEqual("{q1} + 4");
+});
+
 test("Custom trigger in logic", () => {
   Serializer.addClass(
     "incrementcountertrigger",