diff --git a/src/elements/content-sidebar/activity-feed-v2/FeedItemRow.tsx b/src/elements/content-sidebar/activity-feed-v2/FeedItemRow.tsx
index cd2af75786..8be0c04ade 100644
--- a/src/elements/content-sidebar/activity-feed-v2/FeedItemRow.tsx
+++ b/src/elements/content-sidebar/activity-feed-v2/FeedItemRow.tsx
@@ -118,7 +118,10 @@ const FeedItemRow = ({
                 const serialized = serializeEditorContent(content);
                 if (!serialized || !serialized.text.trim()) return;
                 if (id === item.id) {
-                    onCommentUpdate?.(id, serialized.text, undefined, serialized.hasMention, permissions);
+                    const text = item.annotationTimestampMarkup
+                        ? `${item.annotationTimestampMarkup} ${serialized.text}`
+                        : serialized.text;
+                    onCommentUpdate?.(id, text, undefined, serialized.hasMention, permissions);
                     return;
                 }
                 dispatchReplyEdit({
diff --git a/src/elements/content-sidebar/activity-feed-v2/__tests__/FeedItemRow.test.tsx b/src/elements/content-sidebar/activity-feed-v2/__tests__/FeedItemRow.test.tsx
index 5df04af2ef..20a98f948d 100644
--- a/src/elements/content-sidebar/activity-feed-v2/__tests__/FeedItemRow.test.tsx
+++ b/src/elements/content-sidebar/activity-feed-v2/__tests__/FeedItemRow.test.tsx
@@ -417,6 +417,44 @@ describe('elements/content-sidebar/activity-feed-v2/FeedItemRow', () => {
 
             expect(mockedSeekVideoToMs).toHaveBeenCalledWith(8055);
         });
+
+        test('should re-prepend timestamp markup when editing a video comment so the badge survives the update', () => {
+            mockedSerializeEditorContent.mockReturnValue({ hasMention: false, text: 'edited-text' });
+            const onCommentUpdate = jest.fn();
+            const timestampedComment: TransformedCommentItem = {
+                ...mockComment,
+                annotationTarget: { timestamp: '0:08', type: AnnotationBadgeType.Frame },
+                annotationTimestampMarkup: '#[timestamp:8055,versionId:2390295731268]',
+                annotationTimestampMs: 8055,
+            };
+            render(<FeedItemRow {...defaultProps} item={timestampedComment} onCommentUpdate={onCommentUpdate} />);
+
+            lastThreadedAnnotationProps.onEdit?.('comment-1', { type: 'doc', content: [] });
+
+            expect(onCommentUpdate).toHaveBeenCalledWith(
+                'comment-1',
+                '#[timestamp:8055,versionId:2390295731268] edited-text',
+                undefined,
+                false,
+                commentPermissions,
+            );
+        });
+
+        test('should not modify edit text for a regular comment without timestamp markup', () => {
+            mockedSerializeEditorContent.mockReturnValue({ hasMention: false, text: 'edited-text' });
+            const onCommentUpdate = jest.fn();
+            render(<FeedItemRow {...defaultProps} item={mockComment} onCommentUpdate={onCommentUpdate} />);
+
+            lastThreadedAnnotationProps.onEdit?.('comment-1', { type: 'doc', content: [] });
+
+            expect(onCommentUpdate).toHaveBeenCalledWith(
+                'comment-1',
+                'edited-text',
+                undefined,
+                false,
+                commentPermissions,
+            );
+        });
     });
 
     describe('annotation rendering', () => {
diff --git a/src/elements/content-sidebar/activity-feed-v2/__tests__/transformers.test.ts b/src/elements/content-sidebar/activity-feed-v2/__tests__/transformers.test.ts
index c319f685c6..593764b840 100644
--- a/src/elements/content-sidebar/activity-feed-v2/__tests__/transformers.test.ts
+++ b/src/elements/content-sidebar/activity-feed-v2/__tests__/transformers.test.ts
@@ -689,6 +689,7 @@ describe('elements/content-sidebar/activity-feed-v2/transformers', () => {
             const result = extractTimestampMarkup('#[timestamp:8055,versionId:2390295731268]  wowo');
             expect(result.cleanText).toBe('wowo');
             expect(result.target).toEqual({ timestamp: '0:08', type: 'frame' });
+            expect(result.timestampMarkup).toBe('#[timestamp:8055,versionId:2390295731268]');
             expect(result.timestampMs).toBe(8055);
         });
 
@@ -696,6 +697,7 @@ describe('elements/content-sidebar/activity-feed-v2/transformers', () => {
             const result = extractTimestampMarkup('#[timestamp:65000] hello');
             expect(result.cleanText).toBe('hello');
             expect(result.target).toEqual({ timestamp: '1:05', type: 'frame' });
+            expect(result.timestampMarkup).toBe('#[timestamp:65000]');
             expect(result.timestampMs).toBe(65000);
         });
 
@@ -759,6 +761,7 @@ describe('elements/content-sidebar/activity-feed-v2/transformers', () => {
             expect(result!.type).toBe('comment');
             if (result!.type === 'comment') {
                 expect(result.annotationTarget).toEqual({ timestamp: '0:08', type: 'frame' });
+                expect(result.annotationTimestampMarkup).toBe('#[timestamp:8055,versionId:2390295731268]');
                 expect(result.annotationTimestampMs).toBe(8055);
             }
         });
@@ -778,6 +781,7 @@ describe('elements/content-sidebar/activity-feed-v2/transformers', () => {
             const result = transformFeedItem(comment as unknown as FeedItem);
             if (result!.type === 'comment') {
                 expect(result.annotationTarget).toBeUndefined();
+                expect(result.annotationTimestampMarkup).toBeUndefined();
                 expect(result.annotationTimestampMs).toBeUndefined();
             }
         });
diff --git a/src/elements/content-sidebar/activity-feed-v2/transformers.ts b/src/elements/content-sidebar/activity-feed-v2/transformers.ts
index 93497bd133..7518ebbd93 100644
--- a/src/elements/content-sidebar/activity-feed-v2/transformers.ts
+++ b/src/elements/content-sidebar/activity-feed-v2/transformers.ts
@@ -46,7 +46,12 @@ const TIMESTAMP_MARKUP_REGEX = /^#\[timestamp:(\d+)(?:,versionId:\d+)?\]\s*/;
 
 export const extractTimestampMarkup = (
     text: string,
-): { cleanText: string; target?: AnnotationBadgeTargetType; timestampMs?: number } => {
+): {
+    cleanText: string;
+    target?: AnnotationBadgeTargetType;
+    timestampMarkup?: string;
+    timestampMs?: number;
+} => {
     if (!text) return { cleanText: '' };
     const match = text.match(TIMESTAMP_MARKUP_REGEX);
     if (!match) return { cleanText: text };
@@ -60,7 +65,7 @@ export const extractTimestampMarkup = (
         timestamp: convertMillisecondsToTimestamp(ms),
         type: AnnotationBadgeType.Frame,
     };
-    return { cleanText, target, timestampMs: ms };
+    return { cleanText, target, timestampMarkup: fullMatch.trimEnd(), timestampMs: ms };
 };
 
 const parseLine = (line: string, authorId: string): (MentionNode | TextNode)[] => {
@@ -292,11 +297,17 @@ export const transformFeedItem = (item: FeedItem, currentUserId?: string): Trans
             const comment = item as unknown as Comment;
             const commentIsResolved = comment.status === 'resolved';
             const rawText = comment.tagged_message || comment.message || '';
-            const { cleanText, target: annotationTarget, timestampMs } = extractTimestampMarkup(rawText);
+            const {
+                cleanText,
+                target: annotationTarget,
+                timestampMarkup,
+                timestampMs,
+            } = extractTimestampMarkup(rawText);
             const root = commentToTextMessage(comment, cleanText);
             const replies = (comment.replies ?? []).map(reply => commentToTextMessage(reply));
             return {
                 annotationTarget,
+                annotationTimestampMarkup: timestampMarkup,
                 annotationTimestampMs: timestampMs,
                 id: comment.id,
                 isResolved: commentIsResolved,
diff --git a/src/elements/content-sidebar/activity-feed-v2/types.ts b/src/elements/content-sidebar/activity-feed-v2/types.ts
index 9710a5ad2b..75aa4757af 100644
--- a/src/elements/content-sidebar/activity-feed-v2/types.ts
+++ b/src/elements/content-sidebar/activity-feed-v2/types.ts
@@ -47,6 +47,7 @@ type ResolvedInfo = {
 
 export type TransformedCommentItem = {
     annotationTarget?: AnnotationBadgeTargetType;
+    annotationTimestampMarkup?: string;
     annotationTimestampMs?: number;
     id: string;
     messages: TextMessageType[];