From 631be04d5de1c7489af970338d94163dc174d61e Mon Sep 17 00:00:00 2001
From: Christophe Battarel <christophe@altairis.fr>
Date: Wed, 27 Mar 2019 12:15:50 +0100
Subject: [PATCH] better clone oldline and avoid emptylabel on update

---
 htdocs/commande/class/commande.class.php | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/htdocs/commande/class/commande.class.php b/htdocs/commande/class/commande.class.php
index 6eff20da863..18495a68f50 100644
--- a/htdocs/commande/class/commande.class.php
+++ b/htdocs/commande/class/commande.class.php
@@ -2195,9 +2195,7 @@ class Commande extends CommonOrder
 					$line->fetch($lineid);
 
 					// Memorize previous line for triggers
-					$staticline=new OrderLine($this->db);
-					$staticline->fetch($lineid);
-					$staticline->fetch_optionals($lineid);
+					$staticline = clone $line;
 					$line->oldline = $staticline;
 
 					if ($line->delete($user) > 0)
@@ -3054,7 +3052,7 @@ class Commande extends CommonOrder
 			}
 
 			$this->line->rowid=$rowid;
-			$this->line->label=$label;
+			$this->line->label=!empty($label)?$label:$this->line->oldline->label;
 			$this->line->desc=$desc;
 			$this->line->qty=$qty;