Story 3.2 done

src/ui/gm/PresetImportDialog.js

@@ -97,6 +97,8 @@ export class PresetImportDialog extends _AppBase {
       previewItems: this._previewItems,
       requiresConfirmation: this._requiresConfirmation,
       selectedFileName: this._selectedFile?.name ?? null,
+      mergeLabel: 'Merge',
+      replaceLabel: 'Replace',
     };
   }