diff --git a/includes/class-wc-cart-session.php b/includes/class-wc-cart-session.php
index ea8023a72b2..66e5382f266 100644
--- a/includes/class-wc-cart-session.php
+++ b/includes/class-wc-cart-session.php
@@ -130,6 +130,11 @@ final class WC_Cart_Session {
 			}
 		}
 
+		// If it's not empty, it's been already populated by the loop above
+		if ( ! empty( $cart_contents ) ) {
+			$this->cart->set_cart_contents( apply_filters( 'woocommerce_cart_contents_changed', $cart_contents ) );
+		}
+
 		do_action( 'woocommerce_cart_loaded_from_session', $this->cart );
 
 		if ( $update_cart_session || is_null( WC()->session->get( 'cart_totals', null ) ) ) {
diff --git a/includes/class-wc-cart.php b/includes/class-wc-cart.php
index ae5f00e5aaf..863c8c23ef0 100644
--- a/includes/class-wc-cart.php
+++ b/includes/class-wc-cart.php
@@ -1093,6 +1093,8 @@ class WC_Cart extends WC_Legacy_Cart {
 				);
 			}
 
+			$this->cart_contents = apply_filters( 'woocommerce_cart_contents_changed', $this->cart_contents );
+
 			do_action( 'woocommerce_add_to_cart', $cart_item_key, $product_id, $quantity, $variation_id, $variation, $cart_item_data );
 
 			return $cart_item_key;