diff --git a/addons/events/fnc_addPlayerEventHandler.sqf b/addons/events/fnc_addPlayerEventHandler.sqf
index 0fd53bf1c..d4ea15c35 100644
--- a/addons/events/fnc_addPlayerEventHandler.sqf
+++ b/addons/events/fnc_addPlayerEventHandler.sqf
@@ -125,13 +125,13 @@ private _id = switch (_type) do {
     };
     case "group": {
         if (_applyRetroactively) then {
-            [GVAR(oldUnit), group GVAR(oldUnit), grpNull] call _function;
+            [GVAR(oldUnit), GVAR(oldGroup), GVAR(oldGroup)] call _function; // backwards compatiblity
         };
         [QGVAR(groupEvent), _function] call CBA_fnc_addEventHandler // return id
     };
     case "leader": {
         if (_applyRetroactively) then {
-            [GVAR(oldUnit), leader GVAR(oldUnit), objNull] call _function;
+            [GVAR(oldUnit), GVAR(oldLeader), GVAR(oldLeader)] call _function; //backwards compatiblity
         };
         [QGVAR(leaderEvent), _function] call CBA_fnc_addEventHandler // return id
     };
diff --git a/addons/events/fnc_playerEvent.sqf b/addons/events/fnc_playerEvent.sqf
index eb740a6a7..0f06a9420 100644
--- a/addons/events/fnc_playerEvent.sqf
+++ b/addons/events/fnc_playerEvent.sqf
@@ -71,12 +71,12 @@ if !(_state isEqualTo GVAR(oldState)) then {
     };
 
     if !(_newGroup isEqualTo GVAR(oldGroup)) then {
-        [QGVAR(groupEvent), [_unit, GVAR(oldGroup), _newGroup]] call CBA_fnc_localEvent;
+        [QGVAR(groupEvent), [_unit, GVAR(oldGroup), _newGroup]] call CBA_fnc_localEvent; // intentionally reversed order for backwards compatiblity
         GVAR(oldGroup) = _newGroup;
     };
 
     if !(_newLeader isEqualTo GVAR(oldLeader)) then {
-        [QGVAR(leaderEvent), [_unit, GVAR(oldLeader), _newLeader]] call CBA_fnc_localEvent;
+        [QGVAR(leaderEvent), [_unit, GVAR(oldLeader), _newLeader]] call CBA_fnc_localEvent; // intentionally reversed order for backwards compatiblity
         GVAR(oldLeader) = _newLeader;
     };
 
@@ -113,7 +113,7 @@ if !(_state isEqualTo GVAR(oldState)) then {
         } forEach [primaryWeaponMagazine _unit, secondaryWeaponMagazine _unit, handgunMagazine _unit];
 
         if !(_newLoadoutNoAmmo isEqualTo GVAR(oldLoadoutNoAmmo)) then {
-            [QGVAR(loadoutEvent), [_unit, GVAR(oldLoadout), _newLoadout]] call CBA_fnc_localEvent;
+            [QGVAR(loadoutEvent), [_unit, _newLoadout, GVAR(oldLoadout)]] call CBA_fnc_localEvent;
             GVAR(oldLoadoutNoAmmo) = _newLoadoutNoAmmo;
         };