diff --git a/loopback/server/connectors/vn-mysql.js b/loopback/server/connectors/vn-mysql.js
index 55cc4edb3..b1c002363 100644
--- a/loopback/server/connectors/vn-mysql.js
+++ b/loopback/server/connectors/vn-mysql.js
@@ -5,6 +5,38 @@ const EnumFactory = require('loopback-connector-mysql').EnumFactory;
 const Transaction = require('loopback-connector').Transaction;
 const fs = require('fs');
 
+const limitSet = new Set([
+    'save',
+    'updateOrCreate',
+    'replaceOrCreate',
+    'replaceById',
+    'update'
+]);
+
+const opOpts = {
+    update: [
+        'update',
+        'replaceById',
+        // |insert
+        'save',
+        'updateOrCreate',
+        'replaceOrCreate'
+    ],
+    delete: [
+        'destroy',
+        'destroyAll'
+    ],
+    insert: [
+        'create'
+    ]
+};
+
+const opMap = new Map();
+for (const op in opOpts) {
+    for (const met of opOpts[op])
+        opMap.set(met, op);
+}
+
 class VnMySQL extends MySQL {
     /**
      * Promisified version of execute().
@@ -299,41 +331,8 @@ class VnMySQL extends MySQL {
             const data = ctx.data;
             const idName = this.idName(model);
 
-            const limitSet = new Set([
-                'save',
-                'updateOrCreate',
-                'replaceOrCreate',
-                'replaceById',
-                'updateAttributes',
-                'update'
-            ]);
-
             const limit = limitSet.has(method);
 
-            const opOpts = {
-                update: [
-                    'update',
-                    'replaceById',
-                    'updateAttributes',
-                    // |insert
-                    'save',
-                    'updateOrCreate',
-                    'replaceOrCreate'
-                ],
-                delete: [
-                    'destroy',
-                    'destroyAll'
-                ],
-                insert: [
-                    'create'
-                ]
-            };
-
-            const opMap = new Map();
-            for (const op in opOpts) {
-                for (const met of opOpts[op])
-                    opMap.set(met, op);
-            }
             const op = opMap.get(method);
 
             if (!where) {
@@ -356,8 +355,7 @@ class VnMySQL extends MySQL {
 
             const res = await new Promise(resolve => {
                 const fnArgs = args.slice(0, -2);
-                fnArgs.push(opts);
-                fnArgs.push((...args) => resolve(args));
+                fnArgs.push(opts, (...args) => resolve(args));
                 super[method].apply(this, fnArgs);
             });
 
@@ -514,7 +512,7 @@ class VnMySQL extends MySQL {
                 // Delete unchanged properties
                 if (oldI) {
                     Object.keys(oldI).forEach(prop => {
-                        if (newI[prop] == oldI[prop]) {
+                        if (newI[prop] === oldI[prop]) {
                             delete newI[prop];
                             delete oldI[prop];
                         }