diff --git a/core/src/main/java/hudson/security/AuthorizationMatrixProperty.java b/core/src/main/java/hudson/security/AuthorizationMatrixProperty.java
index daf512a11236bc0605c3198acc9c06e15b5feb72..e6afcca90e6b7965d75c7024fd43c80d54b46fa0 100644
--- a/core/src/main/java/hudson/security/AuthorizationMatrixProperty.java
+++ b/core/src/main/java/hudson/security/AuthorizationMatrixProperty.java
@@ -262,6 +262,8 @@ public class AuthorizationMatrixProperty extends JobProperty<Job<?, ?>> {
 				reader.moveUp();
 			}
 
+            GlobalMatrixAuthorizationStrategy.migrateHudson2324(as.grantedPermissions);
+
 			return as;
 		}
 	}
diff --git a/core/src/main/java/hudson/security/GlobalMatrixAuthorizationStrategy.java b/core/src/main/java/hudson/security/GlobalMatrixAuthorizationStrategy.java
index e199d97a431c2f00fa3703b8039f9a098cc989c4..3f49a5776b52c80e814900b3326dff39a5e5c0a8 100644
--- a/core/src/main/java/hudson/security/GlobalMatrixAuthorizationStrategy.java
+++ b/core/src/main/java/hudson/security/GlobalMatrixAuthorizationStrategy.java
@@ -54,6 +54,7 @@ import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
 import java.io.IOException;
+import java.io.Serializable;
 
 /**
  * Role-based authorization via a matrix.
@@ -105,6 +106,10 @@ public class GlobalMatrixAuthorizationStrategy extends AuthorizationStrategy {
         return sids;
     }
 
+    /**
+     * In earlier version of Hudson we used to use reflection converter, which calls this method.
+     * This is now unmarshaller via {@link ConverterImpl}
+     */
     private Object readResolve() {
         migrateHudson2324(grantedPermissions);
         acl = new AclImpl();
@@ -209,6 +214,8 @@ public class GlobalMatrixAuthorizationStrategy extends AuthorizationStrategy {
                 reader.moveUp();
             }
 
+            migrateHudson2324(as.grantedPermissions);
+
             return as;
         }