diff --git a/src/core/server/saved_objects/migrations/core/migrate_raw_docs.ts b/src/core/server/saved_objects/migrations/core/migrate_raw_docs.ts
index c7d56f3912256..461ae1df6bc3d 100644
--- a/src/core/server/saved_objects/migrations/core/migrate_raw_docs.ts
+++ b/src/core/server/saved_objects/migrations/core/migrate_raw_docs.ts
@@ -21,16 +21,16 @@ import { MigrateAndConvertFn } from './document_migrator';
 import { TransformSavedObjectDocumentError } from '.';
 
 export interface DocumentsTransformFailed {
-  type: string;
-  corruptDocumentIds: string[];
-  transformErrors: TransformErrorObjects[];
+  readonly type: string;
+  readonly corruptDocumentIds: string[];
+  readonly transformErrors: TransformErrorObjects[];
 }
 export interface DocumentsTransformSuccess {
-  processedDocs: SavedObjectsRawDoc[];
+  readonly processedDocs: SavedObjectsRawDoc[];
 }
 export interface TransformErrorObjects {
-  rawId: string;
-  err: TransformSavedObjectDocumentError | Error;
+  readonly rawId: string;
+  readonly err: TransformSavedObjectDocumentError | Error;
 }
 type MigrateFn = (
   doc: SavedObjectUnsanitizedDoc<unknown>
@@ -101,7 +101,6 @@ export function migrateRawDocsSafely(
     const options = { namespaceTreatment: 'lax' as const };
     for (const raw of rawDocs) {
       if (serializer.isRawSavedObject(raw, options)) {
-        // const savedObject = convertToRawAddMigrationVersion(raw, options, serializer);
         try {
           const savedObject = convertToRawAddMigrationVersion(raw, options, serializer);
           processedDocs.push(
@@ -110,9 +109,9 @@ export function migrateRawDocsSafely(
         } catch (err) {
           if (err instanceof TransformSavedObjectDocumentError) {
             // the doc id we get from the error is only the uuid part
-            // we transform the id to a raw saved object id.
+            // we use the original raw document _id instead
             transformErrors.push({
-              rawId: serializer.generateRawId(err.namespace, err.type, err.id),
+              rawId: raw._id,
               err,
             });
           } else {
@@ -179,7 +178,7 @@ async function migrateMapToRawDoc(
 }
 
 /**
- * Sanitizes the raw saved object document and sets the migration version
+ * Sanitizes the raw saved object document
  * @param {SavedObjectRawDoc} rawDoc
  * @param options
  * @param {SavedObjectsSerializer} serializer
diff --git a/src/core/server/saved_objects/migrationsv2/integration_tests/actions.test.ts b/src/core/server/saved_objects/migrationsv2/integration_tests/actions.test.ts
index cefe7d9360af0..d0158a4c68f24 100644
--- a/src/core/server/saved_objects/migrationsv2/integration_tests/actions.test.ts
+++ b/src/core/server/saved_objects/migrationsv2/integration_tests/actions.test.ts
@@ -1039,7 +1039,6 @@ describe('migration actions', () => {
       const resultsWithProcessDocs = ((await transformTask()) as Either.Right<DocumentsTransformSuccess>)
         .right.processedDocs;
       expect(resultsWithProcessDocs.length).toEqual(2);
-      // const foo2 = hits.find((h) => h._id === 'foo:2');
       const foo2 = resultsWithProcessDocs.find((h) => h._id === 'foo:2');
       expect(foo2?._source?.value).toBe(3);
     });
diff --git a/src/core/server/saved_objects/migrationsv2/integration_tests/corrupt_outdated_docs.test.ts b/src/core/server/saved_objects/migrationsv2/integration_tests/corrupt_outdated_docs.test.ts
index 244cd4b1c21c9..e48f1e65c120f 100644
--- a/src/core/server/saved_objects/migrationsv2/integration_tests/corrupt_outdated_docs.test.ts
+++ b/src/core/server/saved_objects/migrationsv2/integration_tests/corrupt_outdated_docs.test.ts
@@ -111,10 +111,11 @@ describe('migration v2 with corrupt saved object documents', () => {
       const corruptBarSOs = /bar:/g;
       const corruptBazSOs = /baz:/g;
       expect(
-        [...err.message.matchAll(corruptFooSOs)].concat(
-          [...err.message.matchAll(corruptBarSOs)],
-          [...err.message.matchAll(corruptBazSOs)]
-        ).length
+        [
+          ...err.message.matchAll(corruptFooSOs),
+          ...err.message.matchAll(corruptBarSOs),
+          ...err.message.matchAll(corruptBazSOs),
+        ].length
       ).toEqual(16);
     }
   });