diff --git a/Moose Development/Moose/Core/Event.lua b/Moose Development/Moose/Core/Event.lua
index 71270e026..e0c647f2f 100644
--- a/Moose Development/Moose/Core/Event.lua	
+++ b/Moose Development/Moose/Core/Event.lua	
@@ -278,7 +278,6 @@ EVENTS = {
   SimulationUnfreeze        = world.event.S_EVENT_SIMULATION_UNFREEZE or -1, 
   HumanAircraftRepairStart  = world.event.S_EVENT_HUMAN_AIRCRAFT_REPAIR_START or -1, 
   HumanAircraftRepairFinish = world.event.S_EVENT_HUMAN_AIRCRAFT_REPAIR_FINISH or -1,
-  GroupChangeOption         = world.event.S_EVENT_GROUP_CHANGE_OPTION or -1,
   -- dynamic cargo
   NewDynamicCargo           = world.event.S_EVENT_NEW_DYNAMIC_CARGO or -1,
   DynamicCargoLoaded        = world.event.S_EVENT_DYNAMIC_CARGO_LOADED or -1,
@@ -292,25 +291,23 @@ EVENTS = {
 --
 --   * A (Object.Category.)UNIT : A UNIT object type is involved in the Event.
 --   * A (Object.Category.)STATIC : A STATIC object type is involved in the Event.
---   * A GROUP : A DCS Group object is involved in the Event.
 --
 -- @type EVENTDATA
 -- @field #number id The identifier of the event.
 --
--- @field DCS#Unit initiator (UNIT/STATIC/SCENERY/GROUP) The initiating @{DCS#Unit} or @{DCS#StaticObject}. For `S_EVENT_GROUP_CHANGE_OPTION`, this is a DCS Group.
+-- @field DCS#Unit initiator (UNIT/STATIC/SCENERY) The initiating @{DCS#Unit} or @{DCS#StaticObject}.
 -- @field DCS#Object.Category IniObjectCategory (UNIT/STATIC/SCENERY) The initiator object category ( Object.Category.UNIT or Object.Category.STATIC ).
 -- @field DCS#Unit IniDCSUnit (UNIT/STATIC) The initiating @{DCS#Unit} or @{DCS#StaticObject}.
 -- @field #string IniDCSUnitName (UNIT/STATIC) The initiating Unit name.
 -- @field Wrapper.Unit#UNIT IniUnit (UNIT/STATIC) The initiating MOOSE wrapper @{Wrapper.Unit#UNIT} of the initiator Unit object.
 -- @field #string IniUnitName (UNIT/STATIC) The initiating UNIT name (same as IniDCSUnitName).
--- @field DCS#Group IniDCSGroup (UNIT/GROUP) The initiating @{DCS#Group}.
--- @field #string IniDCSGroupName (UNIT/GROUP) The initiating Group name.
--- @field Wrapper.Group#GROUP IniGroup (UNIT/GROUP) The initiating MOOSE wrapper @{Wrapper.Group#GROUP} of the initiator Group object.
--- @field #string IniGroupName (UNIT/GROUP) The initiating GROUP name (same as IniDCSGroupName).
--- @field DCS#Group.Category IniGroupCategory (GROUP) The category of the initiating group.
+-- @field DCS#Group IniDCSGroup (UNIT) The initiating {DCSGroup#Group}.
+-- @field #string IniDCSGroupName (UNIT) The initiating Group name.
+-- @field Wrapper.Group#GROUP IniGroup (UNIT) The initiating MOOSE wrapper @{Wrapper.Group#GROUP} of the initiator Group object.
+-- @field #string IniGroupName UNIT) The initiating GROUP name (same as IniDCSGroupName).
 -- @field #string IniPlayerName (UNIT) The name of the initiating player in case the Unit is a client or player slot.
 -- @field #string IniPlayerUCID (UNIT) The UCID of the initiating player in case the Unit is a client or player slot and on a multi-player server.
--- @field DCS#coalition.side IniCoalition (UNIT/GROUP) The coalition of the initiator.
+-- @field DCS#coalition.side IniCoalition (UNIT) The coalition of the initiator.
 -- @field DCS#Unit.Category IniCategory (UNIT) The category of the initiator.
 -- @field #string IniTypeName (UNIT) The type name of the initiator.
 --
@@ -737,12 +734,6 @@ local _EVENTMETA = {
      Side = "I",
      Event = "OnEventHumanAircraftRepairFinish",
      Text = "S_EVENT_HUMAN_AIRCRAFT_REPAIR_FINISH"
-   },
-     [EVENTS.GroupChangeOption] = {
-     Order = 1,
-     Side = "I",
-     Event = "OnEventGroupChangeOption",
-     Text = "S_EVENT_GROUP_CHANGE_OPTION"
    },
    -- dynamic cargo
      [EVENTS.NewDynamicCargo] = {
@@ -1243,16 +1234,7 @@ function EVENT:onEvent( Event )
 
       if Event.initiator then
 
-        if Event.id == EVENTS.GroupChangeOption then
-          Event.IniDCSGroup = Event.initiator
-          Event.IniDCSGroupName = Group.getName(Event.initiator)
-          Event.IniGroupName = Event.IniDCSGroupName
-          Event.IniGroup = GROUP:FindByName(Event.IniDCSGroupName)
-          Event.IniCoalition = Group.getCoalition(Event.initiator)
-          Event.IniGroupCategory = Group.getCategory(Event.initiator)
-        else
-          Event.IniObjectCategory = Object.getCategory(Event.initiator)
-        end
+        Event.IniObjectCategory = Object.getCategory(Event.initiator)
         
         if Event.IniObjectCategory == Object.Category.STATIC then
           ---
@@ -1681,7 +1663,9 @@ function EVENT:onEvent( Event )
       self:T( { EventMeta.Text, Event } )
     end
   else
-    self:E(string.format("WARNING: Could not get EVENTMETA data for event ID=%d! Is this an unknown/new DCS event?", tostring(Event.id)))
+    if Event.id ~= 61 then --- TODO Event 61 is new, but seems to have no real data to be useable, something like option changed.
+      self:E(string.format("WARNING: Could not get EVENTMETA data for event ID=%d! Is this an unknown/new DCS event?", tostring(Event.id)))
+    end
   end
 
   Event = nil