Clear order wait times when changing to a non-stopping order

src/order_cmd.cpp

@@ -1891,6 +1891,9 @@ CommandCost CmdModifyOrder(TileIndex tile, DoCommandFlag flags, uint32 p1, uint3
 					order->SetRefit(CT_NO_REFIT);
 					order->SetLoadType(OLF_LOAD_IF_POSSIBLE);
 					order->SetUnloadType(OUF_UNLOAD_IF_POSSIBLE);
+					if (order->IsWaitTimetabled() || order->GetWaitTime() > 0) {
+						DoCommandEx(tile, v->index | (MTF_WAIT_TIME << 28) | (1 << 31), 0, p3, flags, CMD_CHANGE_TIMETABLE);
+					}
 				}
 				break;
 

src/timetable_cmd.cpp

@@ -206,7 +206,10 @@ CommandCost CmdChangeTimetable(TileIndex tile, DoCommandFlag flags, uint32 p1, u
 	if (wait_time != order->GetWaitTime() || leave_type != order->GetLeaveType()) {
 		switch (order->GetType()) {
 			case OT_GOTO_STATION:
-				if (order->GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) return_cmd_error(STR_ERROR_TIMETABLE_NOT_STOPPING_HERE);
+				if (order->GetNonStopType() & ONSF_NO_STOP_AT_DESTINATION_STATION) {
+					if (mtf == MTF_WAIT_TIME && clear_field) break;
+					return_cmd_error(STR_ERROR_TIMETABLE_NOT_STOPPING_HERE);
+				}
 				break;
 
 			case OT_GOTO_DEPOT: