diff --git a/source/GS64-Migration-Scripts/ExampleGS64MigrationScript.class.st b/source/GS64-Migration-Scripts/ExampleGS64MigrationScript.class.st
index c31b91d..1dd6841 100644
--- a/source/GS64-Migration-Scripts/ExampleGS64MigrationScript.class.st
+++ b/source/GS64-Migration-Scripts/ExampleGS64MigrationScript.class.st
@@ -13,6 +13,12 @@ ExampleGS64MigrationScript >> classNamesToMigrateToLatestVersion [
 	     ClassToChangeSuperclassToStateless )
 ]
 
+{ #category : 'accessing' }
+ExampleGS64MigrationScript >> classNamesToUpdateInstances [
+
+	^ #(  )
+]
+
 { #category : 'accessing' }
 ExampleGS64MigrationScript >> classRenameMappings [
 
diff --git a/source/GS64-Migration-Scripts/ExampleGS64MigrationScript2.class.st b/source/GS64-Migration-Scripts/ExampleGS64MigrationScript2.class.st
index dbfeed3..4def5a9 100644
--- a/source/GS64-Migration-Scripts/ExampleGS64MigrationScript2.class.st
+++ b/source/GS64-Migration-Scripts/ExampleGS64MigrationScript2.class.st
@@ -7,6 +7,12 @@ Class {
 
 { #category : 'accessing' }
 ExampleGS64MigrationScript2 >> classNamesToMigrateToLatestVersion [
+
+	^ #(  )
+]
+
+{ #category : 'accessing' }
+ExampleGS64MigrationScript2 >> classNamesToUpdateInstances [
 	"This class hasn't changed its shape but references
 	changed classes in its instance variables, so we
 	need to fix up this during migration. This cases are