diff --git a/src/order_base.h b/src/order_base.h
index 50a2dcb1f3..afac5cb297 100644
--- a/src/order_base.h
+++ b/src/order_base.h
@@ -730,6 +730,7 @@ public:
 	 */
 	inline const std::vector<uint32> &GetScheduledDispatch() const { return this->scheduled_dispatch; }
 
+	void SetScheduledDispatch(std::vector<uint32> dispatch_list);
 	void AddScheduledDispatch(uint32 offset);
 	void RemoveScheduledDispatch(uint32 offset);
 	void UpdateScheduledDispatch();
@@ -758,6 +759,18 @@ public:
 		this->scheduled_dispatch_start_full_date_fract = start_full_date_fract;
 	}
 
+	/**
+	 * Get the scheduled dispatch start date part
+	 * @return  scheduled dispatch start date part
+	 */
+	inline Date GetScheduledDispatchStartDatePart() const { return this->scheduled_dispatch_start_date; }
+
+	/**
+	 * Get the scheduled dispatch start date fract part
+	 * @return  scheduled dispatch start date fract part
+	 */
+	inline uint16 GetScheduledDispatchStartDateFractPart() const { return this->scheduled_dispatch_start_full_date_fract; }
+
 	/**
 	 * Get the scheduled dispatch start date, in absolute scaled tick
 	 * @return  scheduled dispatch start date
diff --git a/src/order_cmd.cpp b/src/order_cmd.cpp
index cd4493773b..99a461a971 100644
--- a/src/order_cmd.cpp
+++ b/src/order_cmd.cpp
@@ -2133,17 +2133,10 @@ CommandCost CmdCloneOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32
 				if (src->orders.list != nullptr) {
 					dst->orders.list->SetScheduledDispatchDuration(src->orders.list->GetScheduledDispatchDuration());
 					dst->orders.list->SetScheduledDispatchDelay(src->orders.list->GetScheduledDispatchDelay());
-					for (const auto& slot : src->orders.list->GetScheduledDispatch()) {
-						dst->orders.list->AddScheduledDispatch(slot);
-					}
-
-					Date start_date;
-					uint16 start_full_date_fract;
-					SchdispatchConvertToFullDateFract(
-							src->orders.list->GetScheduledDispatchStartTick(),
-							&start_date, &start_full_date_fract);
-					dst->orders.list->SetScheduledDispatchStartDate(start_date, start_full_date_fract);
-					/* Don't copy last dispatch, leave it at 0 (default) */
+					dst->orders.list->SetScheduledDispatchStartDate(src->orders.list->GetScheduledDispatchStartDatePart(),
+							src->orders.list->GetScheduledDispatchStartDateFractPart());
+					dst->orders.list->SetScheduledDispatchLastDispatch(0);
+					dst->orders.list->SetScheduledDispatch(src->orders.list->GetScheduledDispatch());
 				}
 
 				/* Set automation bit if target has it. */
diff --git a/src/schdispatch_cmd.cpp b/src/schdispatch_cmd.cpp
index 36fff10726..9674dabff5 100644
--- a/src/schdispatch_cmd.cpp
+++ b/src/schdispatch_cmd.cpp
@@ -266,6 +266,17 @@ CommandCost CmdScheduledDispatchResetLastDispatch(TileIndex tile, DoCommandFlag
 	return CommandCost();
 }
 
+/**
+ * Set scheduled dispatch slot list.
+ * @param dispatch_list The offset time list, must be correctly sorted.
+ */
+void OrderList::SetScheduledDispatch(std::vector<uint32> dispatch_list)
+{
+	this->scheduled_dispatch = std::move(dispatch_list);
+	assert(std::is_sorted(this->scheduled_dispatch.begin(), this->scheduled_dispatch.end()));
+	this->UpdateScheduledDispatch();
+}
+
 /**
  * Add new scheduled dispatch slot at offsets time.
  * @param offset The offset time to add.
@@ -329,7 +340,7 @@ void OrderList::UpdateScheduledDispatch()
 void OrderList::ResetScheduledDispatch()
 {
 	uint32 windex = this->first_shared->index;
-	
+
 	Date start_date;
 	uint16 start_full_date_fract;
 	uint32 duration;
@@ -350,7 +361,7 @@ void OrderList::ResetScheduledDispatch()
 		start_full_date_fract = 0;
 		duration = 365*DAY_TICKS;
 	}
-	
+
 	DoCommandP(0, windex, duration, CMD_SCHEDULED_DISPATCH_SET_DURATION | CMD_MSG(STR_ERROR_CAN_T_TIMETABLE_VEHICLE));
 
 	uint32 p1 = 0, p2 = 0;