diff --git a/src/renderers/EventRenderer.ts b/src/renderers/EventRenderer.ts
index 3729a83..cd0277a 100644
--- a/src/renderers/EventRenderer.ts
+++ b/src/renderers/EventRenderer.ts
@@ -390,6 +390,12 @@ export abstract class BaseEventRenderer implements EventRendererStrategy {
     this.draggedClone.style.userSelect = '';
     // Behold z-index hvis det er et stacked event
     
+    // Update dataset with new times after successful drop
+    const newEvent = this.elementToCalendarEventWithNewPosition(this.draggedClone, finalColumn);
+    if (newEvent) {
+      this.draggedClone.dataset.start = newEvent.start.toISOString();
+      this.draggedClone.dataset.end = newEvent.end.toISOString();
+    }
     
     // Detect overlaps with other events in the target column and reposition if needed
     this.handleDragDropOverlaps(this.draggedClone, finalColumn);
@@ -498,8 +504,10 @@ export abstract class BaseEventRenderer implements EventRendererStrategy {
       // Re-render affected events with overlap handling
       const affectedEvents = [droppedEvent, ...overlappingEvents];
       this.new_handleEventOverlaps(affectedEvents, eventsLayer);
+    } else {
+      // Reset z-index for non-overlapping events
+      droppedElement.style.zIndex = '';
     }
-    // If no overlaps, the dropped element stays as is
   }
 
   /**