diff --git a/AISKULight/Tests/Unit/src/AISKULightSize.Tests.ts b/AISKULight/Tests/Unit/src/AISKULightSize.Tests.ts
index ee2bb26cb..cdb8a9baf 100644
--- a/AISKULight/Tests/Unit/src/AISKULightSize.Tests.ts
+++ b/AISKULight/Tests/Unit/src/AISKULightSize.Tests.ts
@@ -2,8 +2,8 @@ import { AITestClass, Assert } from "@microsoft/ai-test-framework";
 import * as pako from "pako";
 
 export class AISKULightSizeCheck extends AITestClass {
-    private readonly MAX_RAW_SIZE = 89;
-    private readonly MAX_BUNDLE_SIZE = 89;
+    private readonly MAX_RAW_SIZE = 90;
+    private readonly MAX_BUNDLE_SIZE = 90;
     private readonly MAX_RAW_DEFLATE_SIZE = 37;
     private readonly MAX_BUNDLE_DEFLATE_SIZE = 37;
     private readonly rawFilePath = "../dist/es5/applicationinsights-web-basic.min.js";
diff --git a/AISKULight/Tests/Unit/src/config.tests.ts b/AISKULight/Tests/Unit/src/config.tests.ts
index 97926a608..e234d8ff1 100644
--- a/AISKULight/Tests/Unit/src/config.tests.ts
+++ b/AISKULight/Tests/Unit/src/config.tests.ts
@@ -1,7 +1,7 @@
-import { AITestClass, Assert } from "@microsoft/ai-test-framework";
-import { newId } from "@microsoft/applicationinsights-core-js";
+import { AITestClass, Assert, PollingAssert } from "@microsoft/ai-test-framework";
+import { ITelemetryItem, newId } from "@microsoft/applicationinsights-core-js";
 import { ApplicationInsights} from "../../../src/index";
-import { BreezeChannelIdentifier, utlRemoveSessionStorage } from "@microsoft/applicationinsights-common";
+import { BreezeChannelIdentifier, ContextTagKeys, utlRemoveSessionStorage } from "@microsoft/applicationinsights-common";
 import { Sender } from "@microsoft/applicationinsights-channel-js";
 
 export class ApplicationInsightsConfigTests extends AITestClass {
@@ -11,6 +11,20 @@ export class ApplicationInsightsConfigTests extends AITestClass {
     private readonly _iKey = "testKey";
     private _sessionPrefix: string = newId();
     static registerTests: any;
+    private static readonly _expectedTrackMethods = [
+        "flush",
+        "pollInternalLogs",
+        "stopPollingInternalLogs",
+        "unload",
+        "getPlugin",
+        "addPlugin",
+        "evtNamespace",
+        "addUnloadCb",
+        "onCfgChange",
+        "getTraceCtx",
+        "updateCfg",
+        "addTelemetryInitializer"
+    ];
 
     constructor(testName?: string) {
         super(testName || "ApplicationInsightsAISKULightTests");
@@ -186,6 +200,23 @@ export class ApplicationInsightsConfigTests extends AITestClass {
             }
         });
 
+        
+        this.testCase({
+            name: 'Proxy function exist',
+            test: () => {
+                this.onDone(() =>{
+                    ai.unload(false);
+                });
+                let _config = this._getTestConfig(this._sessionPrefix, true, false);
+                let ai = new ApplicationInsights(_config);
+                ApplicationInsightsConfigTests._expectedTrackMethods.forEach(method => {
+                    Assert.ok(ai[method], `${method} exists`);
+                    Assert.equal('function', typeof ai[method], `${method} is a function`);
+                });
+            }
+        });
+
+
         this.testCase({
             name: "TrackTests: BaseData and baseType should exist",
             test: () => {
@@ -231,6 +262,44 @@ export class ApplicationInsightsConfigTests extends AITestClass {
 
             }
         });
+
+        this.testCase({
+            name: 'Proxy function exist',
+            test: () => {
+                this.onDone(() =>{
+                    ai.unload(false);
+                });
+                let _config = this._getTestConfig(this._sessionPrefix, true, false);
+                let ai = new ApplicationInsights(_config);
+                ApplicationInsightsConfigTests._expectedTrackMethods.forEach(method => {
+                    Assert.ok(ai[method], `${method} exists`);
+                    Assert.equal('function', typeof ai[method], `${method} is a function`);
+                });
+            }
+        });
+
+        this.testCase({
+            name: 'test proxy function (telemetry initializer) works',
+            useFakeTimers: true,
+            test: () => {
+                this.onDone(() =>{
+                    ai.unload(false);
+                });
+                let _config = this._getTestConfig(this._sessionPrefix, true, false);
+                let ai = new ApplicationInsights(_config);
+                const telemetryInitializer = {
+                    initializer: (envelope) => { }
+                }
+                const spy = this.sandbox.spy(telemetryInitializer, "initializer");
+                // act
+                ai.addTelemetryInitializer(telemetryInitializer.initializer);
+                ai.track({name: 'test event'});
+                this.clock.tick(1);
+
+                 // verify
+                 Assert.ok(spy.calledOnce, 'telemetryInitializer was called');
+            }
+        });
     }
 
 }
\ No newline at end of file
diff --git a/AISKULight/src/index.ts b/AISKULight/src/index.ts
index 7e237dccb..2a39b3e04 100644
--- a/AISKULight/src/index.ts
+++ b/AISKULight/src/index.ts
@@ -5,8 +5,9 @@ import dynamicProto from "@microsoft/dynamicproto-js";
 import { Sender } from "@microsoft/applicationinsights-channel-js";
 import { DEFAULT_BREEZE_PATH, IConfig, parseConnectionString } from "@microsoft/applicationinsights-common";
 import {
-    AppInsightsCore, IConfigDefaults, IConfiguration, IDynamicConfigHandler, ILoadedPlugin, IPlugin, ITelemetryItem, ITelemetryPlugin,
-    ITelemetryUnloadState, IUnloadHook, UnloadHandler, WatcherFunction, cfgDfValidate, createDynamicConfig, onConfigChange, proxyFunctions
+    AppInsightsCore, IConfigDefaults, IConfiguration, IDistributedTraceContext, IDynamicConfigHandler, ILoadedPlugin, IPlugin,
+    ITelemetryInitializerHandler, ITelemetryItem, ITelemetryPlugin, ITelemetryUnloadState, IUnloadHook, UnloadHandler, WatcherFunction,
+    cfgDfValidate, createDynamicConfig, onConfigChange, proxyFunctions
 } from "@microsoft/applicationinsights-core-js";
 import { IPromise, createAsyncPromise, doAwaitResponse } from "@nevware21/ts-async";
 import { isNullOrUndefined, isPromiseLike, isString, objDefine, throwError } from "@nevware21/ts-utils";
@@ -65,7 +66,10 @@ export class ApplicationInsights {
                 "addPlugin",
                 "evtNamespace",
                 "addUnloadCb",
-                "onCfgChange"
+                "onCfgChange",
+                "getTraceCtx",
+                "updateCfg",
+                "addTelemetryInitializer"
             ]);
 
             function _initialize(): void {
@@ -226,6 +230,29 @@ export class ApplicationInsights {
         // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging
     }
 
+    /**
+     * Gets the current distributed trace context for this instance if available
+     */
+    public getTraceCtx(): IDistributedTraceContext | null | undefined {
+        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging
+        return null;
+    }
+
+    public addTelemetryInitializer(telemetryInitializer: (item: ITelemetryItem) => boolean | void): ITelemetryInitializerHandler {
+        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging
+        return null;
+    }
+
+    /**
+     * Update the configuration used and broadcast the changes to all loaded plugins
+     * @param newConfig - The new configuration is apply
+     * @param mergeExisting - Should the new configuration merge with the existing or just replace it. Default is to merge.
+     */
+    public updateCfg<T extends IConfiguration = IConfiguration>(newConfig: T, mergeExisting?: boolean): void {
+        // @DynamicProtoStub -- DO NOT add any code as this will be removed during packaging
+    }
+
+
     /**
      * Watches and tracks changes for accesses to the current config, and if the accessed config changes the
      * handler will be recalled.