diff --git a/QuickStackToBag/Lua/Autorun/init.lua b/QuickStackToBag/Lua/Autorun/init.lua
index 2e5ce2c..78cadbd 100644
--- a/QuickStackToBag/Lua/Autorun/init.lua
+++ b/QuickStackToBag/Lua/Autorun/init.lua
@@ -2,8 +2,7 @@ if SERVER then return end
 
 -- Register necessary types and make fields accessible
 LuaUserData.RegisterType("Barotrauma.Items.Components.ItemContainer+SlotRestrictions")
-LuaUserData.RegisterType(
-    'System.Collections.Immutable.ImmutableArray`1[[Barotrauma.Items.Components.ItemContainer+SlotRestrictions, Barotrauma]]')
+LuaUserData.RegisterType('System.Collections.Immutable.ImmutableArray`1[[Barotrauma.Items.Components.ItemContainer+SlotRestrictions, Barotrauma]]')
 LuaUserData.MakeFieldAccessible(Descriptors['Barotrauma.Items.Components.ItemContainer'], 'slotRestrictions')
 LuaUserData.MakeFieldAccessible(Descriptors['Barotrauma.ItemInventory'], 'slots')
 LuaUserData.MakeFieldAccessible(Descriptors["Barotrauma.CharacterInventory"], "slots")
@@ -85,6 +84,90 @@ local function sortContainersByPriority(containers)
     return containers
 end
 
+-- Recursively find all containers in the player's inventory, including nested ones
+local function findAllContainers(inventory, containers)
+    if not inventory or not inventory.slots then return containers end
+    
+    containers = containers or {}
+    
+    for _, slot in ipairs(inventory.slots) do
+        for _, item in ipairs(slot.items) do
+            if item.OwnInventory then
+                -- Add this container
+                print("[QuickStack] Found container: " .. item.Name .. " (" .. item.Prefab.Identifier.Value .. ")")
+                table.insert(containers, item)
+                
+                -- Recursively search inside this container
+                findAllContainers(item.OwnInventory, containers)
+            end
+        end
+    end
+    
+    return containers
+end
+
+-- Find the currently open container using the better approach with opened GUIs
+local function getOpenContainer()
+    -- Check if any ItemContainer GUIs are open
+    for _, gui in pairs(GUI.OpenGuis) do
+        if gui.UserData ~= nil and gui.UserData.Inventory ~= nil then
+            -- Make sure it's not the player's inventory
+            if gui.UserData.Item ~= nil and gui.UserData.Item.Inventory ~= Character.Controlled.Inventory then
+                print("[QuickStack] Found open container: " .. gui.UserData.Item.Name)
+                return gui.UserData.Item
+            end
+        end
+    end
+    
+    -- Try an alternative approach using opened inventories
+    for _, inventory in pairs(ItemInventory.OpenInventories) do
+        if inventory.Owner ~= nil and inventory.Owner.Inventory ~= Character.Controlled.Inventory then
+            -- Found a non-player inventory
+            print("[QuickStack] Found open inventory: " .. inventory.Owner.Name)
+            return inventory.Owner
+        end
+    end
+    
+    print("[QuickStack] No open container found")
+    return nil
+end
+
+-- Function to stack from open container to player containers
+local function stackFromOpenContainer(character, playerContainers, openContainer)
+    if not character or not openContainer or not openContainer.OwnInventory then return 0 end
+
+    print("[QuickStack] Stacking from open container: " .. openContainer.Name)
+
+    local itemsMoved = 0
+    local openContainerInv = openContainer.OwnInventory
+
+    -- Process each slot in the open container
+    for slotIndex = 0, #openContainerInv.slots - 1 do
+        local slot = openContainerInv.slots[slotIndex + 1]
+
+        -- Process items in the slot
+        for i = #slot.items, 1, -1 do
+            local item = slot.items[i]
+
+            -- Skip container items
+            if item.OwnInventory then goto nextItem end
+
+            -- Try to move the item to each player container
+            for _, container in ipairs(playerContainers) do
+                if moveItemToContainer(item, container.OwnInventory) then
+                    print("[QuickStack] Stacked " .. item.Name .. " from open container into " .. container.Name)
+                    itemsMoved = itemsMoved + 1
+                    break
+                end
+            end
+
+            ::nextItem::
+        end
+    end
+
+    return itemsMoved
+end
+
 -- Function to quickly stack items from inventory to containers
 local function quickStackItems(character)
     if not character then return end
@@ -93,20 +176,10 @@ local function quickStackItems(character)
     local inventory = character.Inventory
     if not inventory or not inventory.slots then return end
 
-    -- First identify all containers in inventory
-    local containers = {}
+    -- Find all containers in player inventory, including nested ones
+    local containers = findAllContainers(inventory, {})
 
-    for slotIndex, slot in ipairs(inventory.slots) do
-        for _, item in ipairs(slot.items) do
-            -- Add to containers if it has its own inventory
-            if item.OwnInventory then
-                print("[QuickStack] Found container: " .. item.Name .. " (" .. item.Prefab.Identifier.Value .. ")")
-                table.insert(containers, item)
-            end
-        end
-    end
-
-    print("[QuickStack] Found " .. #containers .. " containers")
+    print("[QuickStack] Found " .. #containers .. " containers (including nested)")
     if #containers == 0 then
         print("[QuickStack] No containers with inventory found!")
         return
@@ -151,6 +224,13 @@ local function quickStackItems(character)
         ::continueSlot::
     end
 
+    -- Check if there's an open container to stack from
+    local openContainer = getOpenContainer()
+    if openContainer then
+        local openContainerItemsMoved = stackFromOpenContainer(character, containers, openContainer)
+        itemsMoved = itemsMoved + openContainerItemsMoved
+    end
+
     if itemsMoved > 0 then
         print("[QuickStack] Stacked " .. itemsMoved .. " items into containers")
     else