[-] FO: Fix ecotax displayed on the quantity discounts tab with a change of base_price on the product page

controllers/admin/AdminProductsController.php

@@ -2884,6 +2884,7 @@ class AdminProductsControllerCore extends AdminController
 		{
 			$this->displayWarning($this->l('You must save this product before adding specific pricing'));
 			$product->id_tax_rules_group = (int)Product::getIdTaxRulesGroupMostUsed();
+			$data->assign('ecotax_tax_excl', 0);
 		}
 
 		// prices part
@@ -2895,7 +2896,6 @@ class AdminProductsControllerCore extends AdminController
 			'ecotaxTaxRate' => Tax::getProductEcotaxRate(),
 			'tax_exclude_taxe_option' => Tax::excludeTaxeOption(),
 			'ps_use_ecotax' => Configuration::get('PS_USE_ECOTAX'),
-			'ecotax_tax_excl' => 0
 		));
 
 		$product->price = Tools::convertPrice($product->price, $this->context->currency, true, $this->context);