diff --git a/vendor/magento/module-quick-order/Controller/Ajax/Delete.php b/vendor/magento/module-quick-order/Controller/Ajax/Delete.php
new file mode 100644
index 000000000..3ea82ee2a
--- /dev/null
+++ b/vendor/magento/module-quick-order/Controller/Ajax/Delete.php
@@ -0,0 +1,98 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+declare(strict_types=1);
+
+namespace Magento\QuickOrder\Controller\Ajax;
+
+use Magento\Framework\App\Action\HttpPostActionInterface;
+use Magento\Framework\App\Action\Context;
+use Magento\QuickOrder\Model\Config as ModuleConfig;
+use Magento\Framework\Controller\Result\JsonFactory;
+use Magento\AdvancedCheckout\Model\Cart;
+use Magento\Framework\App\RequestInterface;
+use Magento\Framework\Exception\NotFoundException;
+
+/**
+ * Class for deleting products from quick order using AJAX
+ */
+class Delete implements HttpPostActionInterface
+{
+    /**
+     * @var JsonFactory
+     */
+    private $resultJsonFactory;
+
+    /**
+     * @var Cart
+     */
+    private $cart;
+
+    /**
+     * @var ModuleConfig
+     */
+    private $moduleConfig;
+
+    /**
+     * @var RequestInterface
+     */
+    private $request;
+
+    /**
+     * @param Context $context
+     * @param ModuleConfig $moduleConfig
+     * @param JsonFactory $resultJsonFactory
+     * @param Cart $cart
+     */
+    public function __construct(
+        Context $context,
+        ModuleConfig $moduleConfig,
+        JsonFactory $resultJsonFactory,
+        Cart $cart
+    ) {
+        $this->moduleConfig = $moduleConfig;
+        $this->resultJsonFactory = $resultJsonFactory;
+        $this->cart = $cart;
+        $this->request = $context->getRequest();
+    }
+
+    /**
+     * Deletes product which SKU specified in request from cart
+     *
+     * @return \Magento\Framework\Controller\Result\Json
+     */
+    public function execute()
+    {
+        $this->checkModuleIsEnabled();
+        $requestData = $this->request->getPostValue();
+        /** @var \Magento\Framework\Controller\Result\Json $resultJson */
+        $resultJson = $this->resultJsonFactory->create();
+        $generalErrorMessage = '';
+        if (empty($requestData['sku'])) {
+            $generalErrorMessage = __('There is no items to delete');
+        } else {
+            $this->cart->removeAffectedItem($requestData['sku']);
+        }
+
+        $data = [
+            'generalErrorMessage' => (string) $generalErrorMessage,
+        ];
+
+        return $resultJson->setData($data);
+    }
+
+    /**
+     * Checks that module is enabled
+     *
+     * @throws NotFoundException
+     */
+    private function checkModuleIsEnabled()
+    {
+        if (!$this->moduleConfig->isActive()) {
+            throw new NotFoundException(__('Page not found.'));
+        }
+    }
+}
diff --git a/vendor/magento/module-quick-order/Controller/Ajax/Search.php b/vendor/magento/module-quick-order/Controller/Ajax/Search.php
index 67587861a..1557cfd4b 100644
--- a/vendor/magento/module-quick-order/Controller/Ajax/Search.php
+++ b/vendor/magento/module-quick-order/Controller/Ajax/Search.php
@@ -52,7 +52,6 @@ class Search extends \Magento\QuickOrder\Controller\AbstractAction implements Ht
         /** @var \Magento\Framework\Controller\Result\Json $resultJson */
         $resultJson = $this->resultJsonFactory->create();
         $generalErrorMessage = '';
-
         $items = json_decode($requestData['items'], true);
         $items = $this->removeEmptySkuItems($items);
         if (empty($items)) {
@@ -70,7 +69,7 @@ class Search extends \Magento\QuickOrder\Controller\AbstractAction implements Ht
 
         $data = [
             'generalErrorMessage' => (string) $generalErrorMessage,
-            'items' => $items
+            'items' => $items,
         ];
 
         return $resultJson->setData($data);
diff --git a/vendor/magento/module-quick-order/view/frontend/templates/widget/sku.phtml b/vendor/magento/module-quick-order/view/frontend/templates/widget/sku.phtml
index 5ffac94e9..a95bf39fc 100644
--- a/vendor/magento/module-quick-order/view/frontend/templates/widget/sku.phtml
+++ b/vendor/magento/module-quick-order/view/frontend/templates/widget/sku.phtml
@@ -26,20 +26,20 @@
                 "nameErrorBlock":"[data-role=error-message]"
         }
      }'></div>
-    <?php if (!$block->getIsTitleHidden()) : ?>
+    <?php if (!$block->getIsTitleHidden()): ?>
         <div class="block-title">
             <strong role="heading" aria-level="2"><?= $block->escapeHtml(__('Order by SKU')) ?></strong>
         </div>
     <?php endif ?>
     <div class="block-content">
         <form
-            class="form form-addbysku"
-            action="<?= $block->escapeUrl($block->getUrl('quickorder/sku/uploadfile')) ?>"
-            method="post"
-            data-role="send-sku"
-            data-mage-init='{"validation":{}, "quickOrderAddToCart":{}}'
-            <?php if ($block->getIsMultipart()) : ?> enctype="multipart/form-data"<?php endif; ?>
-            >
+                class="form form-addbysku"
+                action="<?= $block->escapeUrl($block->getUrl('quickorder/sku/uploadfile')) ?>"
+                method="post"
+                data-role="send-sku"
+                data-mage-init='{"validation":{}, "quickOrderAddToCart":{}}'
+            <?php if ($block->getIsMultipart()): ?> enctype="multipart/form-data"<?php endif; ?>
+        >
             <div class="box box-items">
                 <fieldset class="fieldset" data-container="items">
 
@@ -57,7 +57,7 @@
                     </div>
                 </fieldset>
             </div>
-            <?php if ($block->getChildHtml()) : ?>
+            <?php if ($block->getChildHtml()): ?>
                 <div class="box box-upload">
                     <fieldset class="fieldset">
                         <?= $block->getChildHtml() ?>
@@ -75,7 +75,7 @@
                     </button>
                 </div>
             </div>
-            <?php if ($block->getLink()) : ?>
+            <?php if ($block->getLink()): ?>
                 <?= /* @noEscape */ $block->getLink() ?>
             <?php endif; ?>
         </form>
@@ -86,7 +86,8 @@
                      "productSkuItem":{
                         "rowIndex": "<%- data.rowIndex %>",
                         "tableWigetSelector":"[data-role=block-addbysku]",
-                        "urlSku":"<?= $block->escapeUrl($block->getUrl('quickorder/ajax/search')) ?>"}}'>
+                        "urlSku":"<?= $block->escapeUrl($block->getUrl('quickorder/ajax/search')) ?>",
+                        "urlDelete":"<?= $block->escapeUrl($block->getUrl('quickorder/ajax/delete')) ?>"}}'>
                 <div class="field sku required ui-front">
                     <label class="label">
                         <span><?= $block->escapeHtml(__('Enter SKU or Product Name')) ?></span>
@@ -100,7 +101,8 @@
                                aria-required="true"
                                data-mage-init='{
                                     "Magento_QuickOrder/js/sku/autocomplete": {
-                                        "sourceUrl": "<?= $block->escapeUrl($block->getUrl('quickorder/ajax_product/suggest')) ?>"
+                                        "sourceUrl":
+                                        "<?= $block->escapeUrl($block->getUrl('quickorder/ajax_product/suggest')) ?>"
                                     }
                                }'
                                data-validate='{
@@ -126,17 +128,19 @@
                                maxlength="13"
                                aria-required="true"
                                data-validate='{
-                                    "required-number-if-specified": "[data-id=<%- data.widgetId %><%- data.rowIndex %>sku]",
+                                    "required-number-if-specified":
+                                    "[data-id=<%- data.widgetId %><%- data.rowIndex %>sku]",
                                     "validate-number": true,
                                     "validate-greater-than-zero": true,
                                     "validate-number-range": "0.0001-99999999.9999"
                                     }'
-                                    data-role="product-qty"/>
+                               data-role="product-qty"/>
                     </div>
                 </div>
                 <div class="actions-toolbar">
                     <div class="secondary">
-                        <button type="button" class="action remove" title="<?= $block->escapeHtmlAttr(__('Remove Row')) ?>" data-role="delete">
+                        <button type="button" class="action remove"
+                                title="<?= $block->escapeHtmlAttr(__('Remove Row')) ?>" data-role="delete">
                             <span><?= $block->escapeHtml(__('Remove Row')) ?></span>
                         </button>
                     </div>
diff --git a/vendor/magento/module-quick-order/view/frontend/web/js/multiple-skus.js b/vendor/magento/module-quick-order/view/frontend/web/js/multiple-skus.js
index f9c31c911..1ea1eccd6 100644
--- a/vendor/magento/module-quick-order/view/frontend/web/js/multiple-skus.js
+++ b/vendor/magento/module-quick-order/view/frontend/web/js/multiple-skus.js
@@ -52,8 +52,9 @@ define([
                 skuArray = this._getValueArray(),
                 skuCounter = 0;
 
-            $.each(skuArray, function (index, val) {
-                var singleSkuInput = self._getSingleSkuInput(val, true),
+            $.each(skuArray, function (index, value) {
+                var val = value.trim().toLowerCase(),
+                    singleSkuInput = self._getSingleSkuInput(val, true),
                     item = {
                         'sku': val,
                         'qty': 1
@@ -61,7 +62,7 @@ define([
                     skipItem = false;
 
                 postArray.filter(function (postItem) {
-                    if (postItem.sku === val) {
+                    if (postItem.sku.toLowerCase() === val) {
                         ++postItem.qty;
                         skipItem = true;
                     }
@@ -91,7 +92,7 @@ define([
                 self.options.dataError.text = null;
 
                 $.each(data.items, function (index, item) {
-                    var singleSkuInput = self._getSingleSkuInput(item.sku);
+                    var singleSkuInput = self._getSingleSkuInput(item.sku.toString());
 
                     if (singleSkuInput !== false) {
                         item.toRewriteQty = true;
@@ -144,7 +145,7 @@ define([
                 elem = false;
 
             $.each(allSkuInputs, function () {
-                if ($(this).val() === '' && !skipEmpty || $(this).val() === sku) {
+                if ($(this).val() === '' && !skipEmpty || $(this).val().toLowerCase() === sku) {
                     elem = $(this);
                     elem.qty = parseFloat(elem.closest('.deletable-item').find(self.options.qtySelector)[0].value) + 1;
 
diff --git a/vendor/magento/module-quick-order/view/frontend/web/js/product-sku-item.js b/vendor/magento/module-quick-order/view/frontend/web/js/product-sku-item.js
index c8f37eeb7..02f85a91a 100644
--- a/vendor/magento/module-quick-order/view/frontend/web/js/product-sku-item.js
+++ b/vendor/magento/module-quick-order/view/frontend/web/js/product-sku-item.js
@@ -7,13 +7,15 @@ define([
     'jquery',
     'mage/template',
     'text!Magento_QuickOrder/templates/product-info.html',
-    'jquery-ui-modules/widget'
+    'jquery-ui-modules/widget',
+    'mage/translate'
 ], function ($, mageTemplate, infoTpl) {
     'use strict';
 
     $.widget('mage.productSkuItem', {
         options: {
             urlSku: '',
+            urlDelete: '',
             rowIndex: null,
             tableWigetSelector: '',
             addSelector: '[data-role="product-block"]',
@@ -50,7 +52,7 @@ define([
 
             handlers['change ' + this.options.skuSelector] = '_reloadItem';
             handlers['change ' + this.options.qtySelector] = '_reloadItem';
-            handlers['click ' + this.options.removeSelector] = '_reloadError';
+            handlers['click ' + this.options.removeSelector] = '_deleteByAjax';
             handlers.addRow = '_addRow';
 
             this._on(handlers);
@@ -99,6 +101,10 @@ define([
             qtyInput.val(parseFloat(data.qty));
             this._clearProductBlock();
             this._addBlock(data);
+
+            if (!this._isEmptyRowExist()) {
+                this.element.trigger('addNewRow');
+            }
         },
 
         /**
@@ -121,17 +127,39 @@ define([
          */
         _addByAjax: function () {
             var postArray = [],
-                skuElement = this.element.find(this.options.qtySelector),
+                skuElement = this.element.find(this.options.skuSelector),
+                qtyElement = this.element.find(this.options.qtySelector),
                 item = {
-                    'sku': this.element.find(this.options.skuSelector).val(),
-                    'qty': skuElement.val()
-                };
+                    'sku': skuElement.val(),
+                    'qty': qtyElement.val()
+                },
+                self = this,
+                isExistedSku = false;
 
             postArray.push(item);
             this._clearProductBlock();
-            skuElement.prop('disabled', true);
+            qtyElement.prop('readonly', true);
+
+            if ($(this.options.skuSelector).length > 0) {
+                $.each($(this.options.skuSelector), function () {
+                    if (item.sku && $(this).val().toLowerCase() === item.sku.toString().toLowerCase() &&
+                        $(this).attr('id') !== skuElement.attr('id')) {
+                        if (item.qty === '') {
+                            item.qty = 1;
+                        }
+                        $(this).closest('.deletable-item').find(self.options.qtySelector).val(
+                            parseFloat(
+                                $(this).closest('.deletable-item').find(self.options.qtySelector).val()
+                            ) + parseFloat(item.qty)
+                        );
+                        skuElement.val('');
+                        qtyElement.val('');
+                        isExistedSku = true;
+                    }
+                });
+            }
 
-            if (item.sku !== '') {
+            if (item.sku !== '' && !isExistedSku) {
                 $.post(
                     this.options.urlSku,
                     {
@@ -150,13 +178,46 @@ define([
                         this._reloadError();
                     }.bind(this)
                 ).done(function () {
+                    qtyElement.prop('readonly', false);
+                });
+            } else {
+                this._reloadError();
+                qtyElement.prop('readonly', false);
+            }
+        },
+
+        /**
+         * Composition data for ajax and sending them to delete item
+         *
+         * @private
+         */
+        _deleteByAjax: function () {
+            var skuElement = this.element.find(this.options.qtySelector),
+                sku = this.element.find(this.options.skuSelector).val();
+
+            this._clearProductBlock();
+            skuElement.prop('disabled', true);
+
+            if (sku !== '') {
+                $.post(
+                    this.options.urlDelete,
+                    {
+                        'sku': sku
+                    },
+                    function (data) {
+                        if (data && data.generalErrorMessage && data.generalErrorMessage !== '') {
+                            this.options.dataError.text = data.generalErrorMessage;
+                        }
+                        this._reloadError();
+                    }.bind(this)
+                ).done(function () {
                     skuElement.prop('disabled', false);
                 });
             } else {
+                this.options.dataError.text = $.mage.__('There is no items to delete');
                 this._reloadError();
                 skuElement.prop('disabled', false);
             }
-
         },
 
         /**