diff --git a/htdocs/comm/propal.php b/htdocs/comm/propal.php
index 7d85567f480..6821f6cd376 100644
--- a/htdocs/comm/propal.php
+++ b/htdocs/comm/propal.php
@@ -1044,6 +1044,19 @@ if (empty($reshook))
 				unset($_POST['product_desc']);
 				unset($_POST['fournprice']);
 				unset($_POST['buying_price']);
+
+				unset($_POST['date_starthour']);
+				unset($_POST['date_startmin']);
+				unset($_POST['date_startsec']);
+				unset($_POST['date_startday']);
+				unset($_POST['date_startmonth']);
+				unset($_POST['date_startyear']);
+				unset($_POST['date_endhour']);
+				unset($_POST['date_endmin']);
+				unset($_POST['date_endsec']);
+				unset($_POST['date_endday']);
+				unset($_POST['date_endmonth']);
+				unset($_POST['date_endyear']);
 			} else {
 				$db->rollback();
 
diff --git a/htdocs/commande/card.php b/htdocs/commande/card.php
index e63e3b9a5dc..308da237023 100644
--- a/htdocs/commande/card.php
+++ b/htdocs/commande/card.php
@@ -969,6 +969,19 @@ if (empty($reshook))
 				unset($_POST['product_desc']);
 				unset($_POST['fournprice']);
 				unset($_POST['buying_price']);
+
+				unset($_POST['date_starthour']);
+				unset($_POST['date_startmin']);
+				unset($_POST['date_startsec']);
+				unset($_POST['date_startday']);
+				unset($_POST['date_startmonth']);
+				unset($_POST['date_startyear']);
+				unset($_POST['date_endhour']);
+				unset($_POST['date_endmin']);
+				unset($_POST['date_endsec']);
+				unset($_POST['date_endday']);
+				unset($_POST['date_endmonth']);
+				unset($_POST['date_endyear']);
 			} else {
 				setEventMessages($object->error, $object->errors, 'errors');
 			}
diff --git a/htdocs/fourn/commande/card.php b/htdocs/fourn/commande/card.php
index 6a5698497c3..12924285d37 100644
--- a/htdocs/fourn/commande/card.php
+++ b/htdocs/fourn/commande/card.php
@@ -563,6 +563,19 @@ if (empty($reshook))
 	    unset($localtax1_tx);
 	    unset($localtax2_tx);
 
+		unset($_POST['date_starthour']);
+		unset($_POST['date_startmin']);
+		unset($_POST['date_startsec']);
+		unset($_POST['date_startday']);
+		unset($_POST['date_startmonth']);
+		unset($_POST['date_startyear']);
+		unset($_POST['date_endhour']);
+		unset($_POST['date_endmin']);
+		unset($_POST['date_endsec']);
+		unset($_POST['date_endday']);
+		unset($_POST['date_endmonth']);
+		unset($_POST['date_endyear']);
+
 	    if ($result	>= 0)
 	    {
 	        // Define output language
diff --git a/htdocs/fourn/facture/card.php b/htdocs/fourn/facture/card.php
index 837525d3262..cf1d138dcde 100644
--- a/htdocs/fourn/facture/card.php
+++ b/htdocs/fourn/facture/card.php
@@ -620,6 +620,19 @@ if (empty($reshook))
 	        if ($result >= 0)
 	        {
 	            unset($_POST['label']);
+				unset($_POST['date_starthour']);
+				unset($_POST['date_startmin']);
+				unset($_POST['date_startsec']);
+				unset($_POST['date_startday']);
+				unset($_POST['date_startmonth']);
+				unset($_POST['date_startyear']);
+				unset($_POST['date_endhour']);
+				unset($_POST['date_endmin']);
+				unset($_POST['date_endsec']);
+				unset($_POST['date_endday']);
+				unset($_POST['date_endmonth']);
+				unset($_POST['date_endyear']);
+
 	            $db->commit();
 	        }
 	        else
diff --git a/htdocs/supplier_proposal/card.php b/htdocs/supplier_proposal/card.php
index a66c849bf3a..e455ee56c6e 100644
--- a/htdocs/supplier_proposal/card.php
+++ b/htdocs/supplier_proposal/card.php
@@ -729,6 +729,18 @@ if (empty($reshook))
 					unset($_POST['dp_desc']);
 					unset($_POST['idprod']);
 
+					unset($_POST['date_starthour']);
+					unset($_POST['date_startmin']);
+					unset($_POST['date_startsec']);
+					unset($_POST['date_startday']);
+					unset($_POST['date_startmonth']);
+					unset($_POST['date_startyear']);
+					unset($_POST['date_endhour']);
+					unset($_POST['date_endmin']);
+					unset($_POST['date_endsec']);
+					unset($_POST['date_endday']);
+					unset($_POST['date_endmonth']);
+					unset($_POST['date_endyear']);
 				} else {
 					$db->rollback();
 
@@ -836,6 +848,19 @@ if (empty($reshook))
 				unset($_POST['product_desc']);
 				unset($_POST['fournprice']);
 				unset($_POST['buying_price']);
+
+				unset($_POST['date_starthour']);
+				unset($_POST['date_startmin']);
+				unset($_POST['date_startsec']);
+				unset($_POST['date_startday']);
+				unset($_POST['date_startmonth']);
+				unset($_POST['date_startyear']);
+				unset($_POST['date_endhour']);
+				unset($_POST['date_endmin']);
+				unset($_POST['date_endsec']);
+				unset($_POST['date_endday']);
+				unset($_POST['date_endmonth']);
+				unset($_POST['date_endyear']);
 			} else {
 				$db->rollback();