diff --git a/packages/service-provider-sfa/src/SfaServiceProvider.ts b/packages/service-provider-sfa/src/SfaServiceProvider.ts
index 3f438a8f..1ed1e329 100644
--- a/packages/service-provider-sfa/src/SfaServiceProvider.ts
+++ b/packages/service-provider-sfa/src/SfaServiceProvider.ts
@@ -13,7 +13,7 @@ class SfaServiceProvider extends ServiceProviderBase {
 
   public torusKey: TorusKey;
 
-  public migratableKey: BN | null = null;
+  public migratableKey: BN | null = null; // Migration of key from SFA to tKey
 
   private nodeDetailManagerInstance: NodeDetailManager;
 
@@ -79,10 +79,10 @@ class SfaServiceProvider extends ServiceProviderBase {
 
     const torusKey = await this.authInstance.retrieveShares(torusNodeEndpoints, torusIndexes, verifier, finalVerifierParams, finalIdToken);
     this.torusKey = torusKey;
-    const { finalKeyData, oAuthKeyData } = torusKey;
-    const privKey = finalKeyData.privKey || oAuthKeyData.privKey;
 
     if (!torusKey.metadata.upgraded) {
+      const { finalKeyData, oAuthKeyData } = torusKey;
+      const privKey = finalKeyData.privKey || oAuthKeyData.privKey;
       this.migratableKey = new BN(privKey, "hex");
     }
     const postboxKey = Torus.getPostboxKey(torusKey);
diff --git a/packages/service-provider-torus/src/TorusServiceProvider.ts b/packages/service-provider-torus/src/TorusServiceProvider.ts
index 44a57b56..22ef68cb 100644
--- a/packages/service-provider-torus/src/TorusServiceProvider.ts
+++ b/packages/service-provider-torus/src/TorusServiceProvider.ts
@@ -56,10 +56,10 @@ class TorusServiceProvider extends ServiceProviderBase {
     if (obj) {
       const localPrivKey = Torus.getPostboxKey(obj);
       this.torusKey = obj;
-      const { finalKeyData, oAuthKeyData } = obj;
-      const privKey = finalKeyData.privKey || oAuthKeyData.privKey;
 
       if (!obj.metadata.upgraded) {
+        const { finalKeyData, oAuthKeyData } = obj;
+        const privKey = finalKeyData.privKey || oAuthKeyData.privKey;
         this.migratableKey = new BN(privKey, "hex");
       }
 
@@ -78,10 +78,10 @@ class TorusServiceProvider extends ServiceProviderBase {
     if (obj) {
       const localPrivKey = Torus.getPostboxKey(obj);
       this.torusKey = obj;
-      const { finalKeyData, oAuthKeyData } = obj;
-      const privKey = finalKeyData.privKey || oAuthKeyData.privKey;
 
       if (!obj.metadata.upgraded) {
+        const { finalKeyData, oAuthKeyData } = obj;
+        const privKey = finalKeyData.privKey || oAuthKeyData.privKey;
         this.migratableKey = new BN(privKey, "hex");
       }
 
@@ -95,12 +95,12 @@ class TorusServiceProvider extends ServiceProviderBase {
    */
   async triggerHybridAggregateLogin(params: HybridAggregateLoginParams): Promise<TorusHybridAggregateLoginResponse> {
     const obj = await this.customAuthInstance.triggerHybridAggregateLogin(params);
+    this.torusKey = null; // Since there are multiple keys, we don't set the torusKey here.
 
     // `obj` maybe `null` in redirect mode.
     if (obj) {
       const aggregateLoginKey = Torus.getPostboxKey(obj.aggregateLogins[0]);
       const singleLoginKey = Torus.getPostboxKey(obj.singleLogin);
-      this.torusKey = null;
       this.postboxKey = new BN(aggregateLoginKey, "hex");
       this.singleLoginKey = new BN(singleLoginKey, "hex");
     }