diff --git a/src/vs/workbench/api/common/extHost.protocol.ts b/src/vs/workbench/api/common/extHost.protocol.ts
index 76e52bb6ebf..5baca36a48b 100644
--- a/src/vs/workbench/api/common/extHost.protocol.ts
+++ b/src/vs/workbench/api/common/extHost.protocol.ts
@@ -1764,7 +1764,6 @@ export interface INotebookModelAddedData {
 	cells: IMainCellDto[],
 	viewType: string;
 	metadata?: NotebookDocumentMetadata;
-	attachedEditor?: { id: string; selections: number[]; visibleRanges: ICellRange[] }
 	contentOptions: { transientOutputs: boolean; transientMetadata: TransientMetadata; }
 }
 
diff --git a/src/vs/workbench/api/common/extHostNotebook.ts b/src/vs/workbench/api/common/extHostNotebook.ts
index e6ba271e43d..02dc80101d8 100644
--- a/src/vs/workbench/api/common/extHostNotebook.ts
+++ b/src/vs/workbench/api/common/extHostNotebook.ts
@@ -759,13 +759,6 @@ export class ExtHostNotebookController implements ExtHostNotebookShape, ExtHostN
 
 				this._documents.get(uri)?.dispose();
 				this._documents.set(uri, document);
-
-				// create editor if populated
-				if (modelData.attachedEditor) {
-					this._createExtHostEditor(document, modelData.attachedEditor.id, modelData.attachedEditor.selections, modelData.attachedEditor.visibleRanges.map(typeConverters.NotebookCellRange.to));
-					editorChanged = true;
-				}
-
 				this._documentsAndEditors.$acceptDocumentsAndEditorsDelta({ addedDocuments: addedCellDocuments });
 
 				this._onDidOpenNotebookDocument.fire(document.notebookDocument);