diff --git a/Release-Testing-Instructions-WooCommerce-4.9.md b/Release-Testing-Instructions-WooCommerce-4.9.md
index d12f427..877d064 100644
--- a/Release-Testing-Instructions-WooCommerce-4.9.md
+++ b/Release-Testing-Instructions-WooCommerce-4.9.md
@@ -11,6 +11,7 @@ WooCommerce 4.9 includes:
   - [Stock management regression fixes](https://github.com/woocommerce/woocommerce/wiki/Release-Testing-Instructions-WooCommerce-4.9#stock-management-regression-fixes)
   - [Review count failure fix](https://github.com/woocommerce/woocommerce/wiki/Release-Testing-Instructions-WooCommerce-4.9#review-count-failure-fix)
   - [Better error messages when coupons are stuck in a pending order](https://github.com/woocommerce/woocommerce/wiki/Release-Testing-Instructions-WooCommerce-4.9#better-error-messages-when-coupons-are-stuck-in-a-pending-order)
+  - [The improved performance of getting the data related to WooCommerce/Customers]()
 
 ## WooCommerce Admin Updates:
 
@@ -258,4 +259,19 @@ In all cases, the product stock should be restocked back to what it was before p
 - Create a coupon with a usage limit of 1 (either per user, or a global usage limit).
 - Checkout using this coupon, but use a payment method that will allow for the payment to be failed. (For example, WooCommerce Stripe Sandbox where you can use the following test Credit Card details that will result in the failed payment: credit card number: `4000 0000 0000 9995`, expiration date: `02/22`, CVC: `222`).
 - Checkout using this coupon again. 
-- You should see the following message: `Coupon usage limit has been reached. Please try again after some time, or contact us for help.`
\ No newline at end of file
+- You should see the following message: `Coupon usage limit has been reached. Please try again after some time, or contact us for help.`
+
+***
+
+### The improved performance of getting the data related to WooCommerce/Customers
+
+PR for reference: https://github.com/woocommerce/woocommerce/pull/27352
+
+**To test:**
+
+- Place several orders as a logged-in customer.
+- Navigate to `All Orders` view and filter orders by the customer you used to place orders in step 1.
+- Note the number of orders placed by the customer. 
+- Navigate to `WooCommerce/Customers` section.
+- Search for the same customer as in step 2.
+- Confirm that the number of orders of the customer in the `Orders` column matches the number of orders from step 3. 
\ No newline at end of file