1 files changed, 10 insertions, 2 deletions

diff --git a/js/piwik.js b/js/piwik.js
index bed97aa65f..1079b7c859 100644
--- a/js/piwik.js
+++ b/js/piwik.js
@@ -3970,9 +3970,10 @@ if (typeof window.Piwik !== 'object') {
                     lastEcommerceOrderTs,
                     now = new Date(),
                     items = [],
-                    sku;
+                    sku,
+                    isEcommerceOrder = String(orderId).length;
 
-                if (String(orderId).length) {
+                if (isEcommerceOrder) {
                     request += '&ec_id=' + encodeWrapper(orderId);
                     // Record date of order in the visitor cookie
                     lastEcommerceOrderTs = Math.round(now.getTime() / 1000);
@@ -4028,6 +4029,10 @@ if (typeof window.Piwik !== 'object') {
                 }
                 request = getRequest(request, configCustomData, 'ecommerce', lastEcommerceOrderTs);
                 sendRequest(request, configTrackerPause);
+
+                if (isEcommerceOrder) {
+                    ecommerceItems = {};
+                }
             }
 
             function logEcommerceOrder(orderId, grandTotal, subTotal, tax, shipping, discount) {
@@ -6320,6 +6325,7 @@ if (typeof window.Piwik !== 'object') {
                  * Adds an item (product) that is in the current Cart or in the Ecommerce order.
                  * This function is called for every item (product) in the Cart or the Order.
                  * The only required parameter is sku.
+                 * The items are deleted from this JavaScript object when the Ecommerce order is tracked via the method trackEcommerceOrder.
                  *
                  * @param string sku (required) Item's SKU Code. This is the unique identifier for the product.
                  * @param string name (optional) Item's name
@@ -6338,6 +6344,7 @@ if (typeof window.Piwik !== 'object') {
                  * If the Ecommerce order contains items (products), you must call first the addEcommerceItem() for each item in the order.
                  * All revenues (grandTotal, subTotal, tax, shipping, discount) will be individually summed and reported in Piwik reports.
                  * Parameters orderId and grandTotal are required. For others, you can set to false if you don't need to specify them.
+                 * After calling this method, items added to the cart will be removed from this JavaScript object.
                  *
                  * @param string|int orderId (required) Unique Order ID.
                  *                   This will be used to count this order only once in the event the order page is reloaded several times.
@@ -6356,6 +6363,7 @@ if (typeof window.Piwik !== 'object') {
                  * Tracks a Cart Update (add item, remove item, update item).
                  * On every Cart update, you must call addEcommerceItem() for each item (product) in the cart, including the items that haven't been updated since the last cart update.
                  * Then you can call this function with the Cart grandTotal (typically the sum of all items' prices)
+                 * Calling this method does not remove from this JavaScript object the items that were added to the cart via addEcommerceItem
                  *
                  * @param float grandTotal (required) Items (products) amount in the Cart
                  */