Fixed a backward transition issue.

backend/src/services/tour_pages.js

@@ -470,21 +470,26 @@ class TourPagesService extends BaseService {
         let pageModified = false;
 
         for (const element of uiSchema.elements) {
-          // Only process forward elements with transitions that don't have reversed yet
+          // Process both forward elements AND back elements with their own transition
           const isForward = TourPagesService.isForwardElementWithTarget(element);
+          const isBackWithTransition =
+            TourPagesService.isBackElement(element) &&
+            element.transitionVideoUrl;
 
           log.debug({
             pageId: page.id,
             elementType: element.type,
             navType: element.navType,
             isForward,
+            isBackWithTransition,
             hasTransitionVideo: Boolean(element.transitionVideoUrl),
             hasReverseVideo: Boolean(element.reverseVideoUrl),
             targetPageSlug: element.targetPageSlug,
             targetPageId: element.targetPageId,
           }, 'Checking element in regeneration');
 
-          if (!isForward) {
+          // Skip if neither forward nor back-with-transition
+          if (!isForward && !isBackWithTransition) {
             continue;
           }