diff --git a/src/EFCore/ChangeTracking/Internal/InternalEntityEntry.cs b/src/EFCore/ChangeTracking/Internal/InternalEntityEntry.cs
index 7faa07590dc..94d13cf4851 100644
--- a/src/EFCore/ChangeTracking/Internal/InternalEntityEntry.cs
+++ b/src/EFCore/ChangeTracking/Internal/InternalEntityEntry.cs
@@ -1445,9 +1445,6 @@ public void AcceptChanges()
         }
     }
 
-    private readonly static bool _useOldBehavior27455 =
-        AppContext.TryGetSwitch("Microsoft.EntityFrameworkCore.Issue27455", out var enabled27455) && enabled27455;
-
     /// <summary>
     ///     This is an internal API that supports the Entity Framework Core infrastructure and not subject to
     ///     the same compatibility standards as public APIs. It may be changed or removed without notice in
@@ -1475,7 +1472,7 @@ public InternalEntityEntry PrepareToSave()
                 if (property.IsKey()
                     && property.IsForeignKey()
                     && _stateData.IsPropertyFlagged(property.GetIndex(), PropertyFlag.Unknown)
-                    && (_useOldBehavior27455 || !IsStoreGenerated(property)))
+                    && !IsStoreGenerated(property))
                 {
                     if (property.GetContainingForeignKeys().Any(fk => fk.IsOwnership))
                     {
diff --git a/src/EFCore/Metadata/Internal/PropertyExtensions.cs b/src/EFCore/Metadata/Internal/PropertyExtensions.cs
index c60ea556661..f0714f44d7f 100644
--- a/src/EFCore/Metadata/Internal/PropertyExtensions.cs
+++ b/src/EFCore/Metadata/Internal/PropertyExtensions.cs
@@ -70,9 +70,6 @@ public static bool ForUpdate(this ValueGenerated valueGenerated)
         return null;
     }
 
-    private readonly static bool _useOldBehavior27455 =
-        AppContext.TryGetSwitch("Microsoft.EntityFrameworkCore.Issue27455", out var enabled27455) && enabled27455;
-
     /// <summary>
     ///     This is an internal API that supports the Entity Framework Core infrastructure and not subject to
     ///     the same compatibility standards as public APIs. It may be changed or removed without notice in
@@ -84,8 +81,7 @@ public static bool RequiresValueGenerator(this IReadOnlyProperty property)
                 && property.IsKey()
                 && (!property.IsForeignKey()
                     || property.IsForeignKeyToSelf()
-                    || (!_useOldBehavior27455
-                        && property.GetContainingForeignKeys().All(fk => fk.Properties.Any(p => p != property && p.IsNullable)))))
+                    || (property.GetContainingForeignKeys().All(fk => fk.Properties.Any(p => p != property && p.IsNullable)))))
             || property.GetValueGeneratorFactory() != null;
 
     /// <summary>