diff --git a/src/cheat_gui.cpp b/src/cheat_gui.cpp
--- a/src/cheat_gui.cpp
+++ b/src/cheat_gui.cpp
@@ -25,6 +25,7 @@
 #include "settings_gui.h"
 #include "company_gui.h"
 #include "linkgraph/linkgraph.h"
+#include "linkgraph/linkgraphjob.h"
 
 #include "widgets/cheat_widget.h"
 
@@ -104,6 +105,8 @@ static int32 ClickChangeDateCheat(int32 
 	Date new_date = ConvertYMDToDate(p1, ymd.month, ymd.day);
 	LinkGraph *lg;
 	FOR_ALL_LINK_GRAPHS(lg) lg->ShiftDates(new_date - _date);
+	LinkGraphJob *lgj;
+	FOR_ALL_LINK_GRAPH_JOBS(lgj) lgj->ShiftJoinDate(new_date - _date);
 	SetDate(new_date, _date_fract);
 	EnginesMonthlyLoop();
 	SetWindowDirty(WC_STATUS_BAR, 0);