diff --git a/src/order_cmd.cpp b/src/order_cmd.cpp
--- a/src/order_cmd.cpp
+++ b/src/order_cmd.cpp
@@ -296,15 +296,15 @@ void OrderList::Initialize(Order *chain,
 	this->num_manual_orders = 0;
 	this->num_vehicles = 1;
 	this->timetable_duration = 0;
-	this->total_duration = 0;
 
 	for (Order *o = this->first; o != nullptr; o = o->next) {
 		++this->num_orders;
 		if (!o->IsType(OT_IMPLICIT)) ++this->num_manual_orders;
-		this->timetable_duration += o->GetTimetabledWait() + o->GetTimetabledTravel();
 		this->total_duration += o->GetWaitTime() + o->GetTravelTime();
 	}
 
+	this->RecalculateTimetableDuration();
+
 	for (Vehicle *u = this->first_shared->PreviousShared(); u != nullptr; u = u->PreviousShared()) {
 		++this->num_vehicles;
 		this->first_shared = u;
@@ -314,6 +314,18 @@ void OrderList::Initialize(Order *chain,
 }
 
 /**
+ * Recomputes Timetable duration.
+ * Split out into a separate function so it can be used by afterload.
+ */
+void OrderList::RecalculateTimetableDuration()
+{
+	this->timetable_duration = 0;
+	for (Order *o = this->first; o != nullptr; o = o->next) {
+		this->timetable_duration += o->GetTimetabledWait() + o->GetTimetabledTravel();
+	}
+}
+
+/**
  * Free a complete order chain.
  * @param keep_orderlist If this is true only delete the orders, otherwise also delete the OrderList.
  * @note do not use on "current_order" vehicle orders!