diff --git a/app/MindWork AI Studio/Assistants/I18N/allTexts.lua b/app/MindWork AI Studio/Assistants/I18N/allTexts.lua
index d3ea7596..51cf59a8 100644
--- a/app/MindWork AI Studio/Assistants/I18N/allTexts.lua	
+++ b/app/MindWork AI Studio/Assistants/I18N/allTexts.lua	
@@ -3262,6 +3262,9 @@ UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T1347088452"] = "Result"
 -- Do you really want to remove this message?
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T1347427447"] = "Do you really want to remove this message?"
 
+-- Do you really want to roll back this chat to this AI response? All later messages and their attachments will be permanently removed.
+UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T1347725178"] = "Do you really want to roll back this chat to this AI response? All later messages and their attachments will be permanently removed."
+
 -- Yes, remove the AI response and edit it
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T1350385882"] = "Yes, remove the AI response and edit it"
 
@@ -3313,12 +3316,18 @@ UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T2822776450"] = "Export
 -- Number of attachments
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3018847255"] = "Number of attachments"
 
+-- Roll back to this response
+UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3132525321"] = "Roll back to this response"
+
 -- Cannot render content of type {0} yet.
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3175548294"] = "Cannot render content of type {0} yet."
 
 -- Edit
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3267849393"] = "Edit"
 
+-- Roll Back Chat
+UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3304283125"] = "Roll Back Chat"
+
 -- Unknown
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3424652889"] = "Unknown"
 
@@ -3331,6 +3340,9 @@ UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3816336467"] = "Blocked
 -- Do you really want to regenerate this message?
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3878878761"] = "Do you really want to regenerate this message?"
 
+-- Yes, roll back the chat
+UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3951371697"] = "Yes, roll back the chat"
+
 -- Remove Message
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T4070211974"] = "Remove Message"
 
@@ -5281,6 +5293,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T1016188706"] = "Are you sure
 -- Move chat
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T1133040906"] = "Move chat"
 
+-- Copy Chat
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T1192756314"] = "Copy Chat"
+
 -- Loading chats...
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T1364857726"] = "Loading chats..."
 
@@ -5353,6 +5368,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T3249036008"] = "There is alr
 -- Please enter a workspace name.
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T3288132732"] = "Please enter a workspace name."
 
+-- Copy chat
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T3337233722"] = "Copy chat"
+
 -- Rename
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T3355849203"] = "Rename"
 
@@ -12891,3 +12909,9 @@ UI_TEXT_CONTENT["AISTUDIO::TOOLS::WORKSPACEBEHAVIOUR::T3043761007"] = "Are you s
 
 -- Unnamed chat
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::WORKSPACEBEHAVIOUR::T3310482275"] = "Unnamed chat"
+
+-- Copy of {0}
+UI_TEXT_CONTENT["AISTUDIO::TOOLS::WORKSPACEBEHAVIOUR::T3365678931"] = "Copy of {0}"
+
+-- Empty chat
+UI_TEXT_CONTENT["AISTUDIO::TOOLS::WORKSPACEBEHAVIOUR::T4019509364"] = "Empty chat"
diff --git a/app/MindWork AI Studio/Chat/ChatThread.cs b/app/MindWork AI Studio/Chat/ChatThread.cs
index d01e1afa..48be445a 100644
--- a/app/MindWork AI Studio/Chat/ChatThread.cs	
+++ b/app/MindWork AI Studio/Chat/ChatThread.cs	
@@ -350,6 +350,27 @@ public sealed record ChatThread
         this.Blocks.Remove(block);
     }
 
+    /// <summary>
+    /// Removes every content block after the selected content in conversation order.
+    /// </summary>
+    /// <param name="content">The content to keep as the last block.</param>
+    /// <returns>True when one or more later blocks were removed.</returns>
+    public bool RemoveBlocksAfter(IContent content)
+    {
+        var sortedBlocks = this.Blocks.OrderBy(x => x.Time).ToList();
+        var blockIndex = sortedBlocks.FindIndex(block => ReferenceEquals(block.Content, content));
+        if (blockIndex < 0 || blockIndex == sortedBlocks.Count - 1)
+            return false;
+
+        foreach (var block in sortedBlocks.Skip(blockIndex + 1))
+        {
+            DeleteManagedAttachments(block);
+            this.Blocks.Remove(block);
+        }
+
+        return true;
+    }
+
     private static void DeleteManagedAttachments(ContentBlock block)
     {
         if (block.Content is not ContentText textContent)
diff --git a/app/MindWork AI Studio/Chat/ContentBlockComponent.razor b/app/MindWork AI Studio/Chat/ContentBlockComponent.razor
index d1868ed2..0414e795 100644
--- a/app/MindWork AI Studio/Chat/ContentBlockComponent.razor	
+++ b/app/MindWork AI Studio/Chat/ContentBlockComponent.razor	
@@ -70,6 +70,12 @@
                         <MudIconButton Icon="@Icons.Material.Filled.Recycling" Color="Color.Default" Disabled="@(!this.RegenerateEnabled())" OnClick="@this.RegenerateBlock"/>
                     </MudTooltip>
                 }
+                @if (!this.IsLastContentBlock && this.Role is ChatRole.AI && this.RollbackFunc is not null)
+                {
+                    <MudTooltip Text="@T("Roll back to this response")" Placement="Placement.Bottom">
+                        <MudIconButton Icon="@Icons.Material.Filled.Restore" Color="Color.Default" Disabled="@(!this.RollbackEnabled)" OnClick="@this.RollbackBlock"/>
+                    </MudTooltip>
+                }
                 @if (this.RemoveBlockFunc is not null)
                 {
                     <MudTooltip Text="@T("Removes this block")" Placement="Placement.Bottom">
diff --git a/app/MindWork AI Studio/Chat/ContentBlockComponent.razor.cs b/app/MindWork AI Studio/Chat/ContentBlockComponent.razor.cs
index 170d90f8..d6c0ee69 100644
--- a/app/MindWork AI Studio/Chat/ContentBlockComponent.razor.cs	
+++ b/app/MindWork AI Studio/Chat/ContentBlockComponent.razor.cs	
@@ -76,6 +76,9 @@ public partial class ContentBlockComponent : MSGComponentBase
     
     [Parameter]
     public Func<IContent, Task>? RegenerateFunc { get; set; }
+
+    [Parameter]
+    public Func<IContent, Task>? RollbackFunc { get; set; }
     
     [Parameter]
     public Func<IContent, Task>? EditLastBlockFunc { get; set; }
@@ -86,6 +89,9 @@ public partial class ContentBlockComponent : MSGComponentBase
     [Parameter]
     public Func<bool> RegenerateEnabled { get; set; } = () => false;
 
+    [Parameter]
+    public bool RollbackEnabled { get; set; }
+
     /// <summary>
     /// What the export offers, used both as the label of the export button and as the title of
     /// the save dialog.
@@ -780,6 +786,21 @@ public partial class ContentBlockComponent : MSGComponentBase
         if (regenerate.HasValue && regenerate.Value)
             await this.RegenerateFunc(this.Content);
     }
+
+    private async Task RollbackBlock()
+    {
+        if (this.RollbackFunc is null || this.Role is not ChatRole.AI || !this.RollbackEnabled)
+            return;
+
+        var rollback = await this.DialogService.ShowMessageBox(
+            T("Roll Back Chat"),
+            T("Do you really want to roll back this chat to this AI response? All later messages and their attachments will be permanently removed."),
+            T("Yes, roll back the chat"),
+            T("No, keep it"));
+
+        if (rollback.HasValue && rollback.Value)
+            await this.RollbackFunc(this.Content);
+    }
     
     private async Task EditLastBlock()
     {
@@ -852,4 +873,4 @@ public partial class ContentBlockComponent : MSGComponentBase
 
         await this.DisposeMathContainerIfNeededAsync();
     }
-}
\ No newline at end of file
+}
diff --git a/app/MindWork AI Studio/Components/ChatComponent.razor b/app/MindWork AI Studio/Components/ChatComponent.razor
index addb3536..219910c8 100644
--- a/app/MindWork AI Studio/Components/ChatComponent.razor	
+++ b/app/MindWork AI Studio/Components/ChatComponent.razor	
@@ -26,6 +26,8 @@
                         IsSecondToLastBlock="@isSecondLastBlock"
                         RegenerateFunc="@this.RegenerateBlock"
                         RegenerateEnabled="@(() => this.IsProviderSelected && this.ChatThread.IsLLMProviderAllowed(this.Provider))"
+                        RollbackFunc="@this.RollbackBlock"
+                        RollbackEnabled="@(!this.IsCurrentChatStreaming)"
                         EditLastBlockFunc="@this.EditLastBlock"
                         EditLastUserBlockFunc="@this.EditLastUserBlock"/>
                 }
diff --git a/app/MindWork AI Studio/Components/ChatComponent.razor.cs b/app/MindWork AI Studio/Components/ChatComponent.razor.cs
index a11730ba..6e0a1962 100644
--- a/app/MindWork AI Studio/Components/ChatComponent.razor.cs	
+++ b/app/MindWork AI Studio/Components/ChatComponent.razor.cs	
@@ -1394,6 +1394,24 @@ public partial class ChatComponent : MSGComponentBase
         
         await this.SendMessage(reuseLastUserPrompt: true);
     }
+
+    private async Task RollbackBlock(IContent aiBlock)
+    {
+        if (this.ChatThread is null || this.IsCurrentChatStreaming)
+            return;
+
+        if (!this.ChatThread.RemoveBlocksAfter(aiBlock))
+            return;
+
+        this.ChatThread.AugmentedData = string.Empty;
+        this.ChatThread.AISelectedDataSources = [];
+        this.dataSourceSelectionComponent?.ChangeOptionWithoutSaving(this.ChatThread.DataSourceOptions, this.ChatThread.AISelectedDataSources);
+        this.hasUnsavedChanges = true;
+        await this.SaveThread();
+        this.tokenTracker?.Nudge();
+        this.StateHasChanged();
+        await this.inputField.FocusAsync();
+    }
     
     private Task EditLastUserBlock(IContent block)
     {
diff --git a/app/MindWork AI Studio/Components/Workspaces.razor b/app/MindWork AI Studio/Components/Workspaces.razor
index 74e52edd..9a82c961 100644
--- a/app/MindWork AI Studio/Components/Workspaces.razor	
+++ b/app/MindWork AI Studio/Components/Workspaces.razor	
@@ -81,6 +81,10 @@ else
                                             <MudIconButton Icon="@Icons.Material.Filled.MoveToInbox" Size="Size.Medium" Color="Color.Inherit" Disabled="@this.IsChatTreeItemBusy(treeItem)" OnClick="@(() => this.MoveChatAsync(treeItem.Path))"/>
                                         </MudTooltip>
 
+                                        <MudTooltip Text="@T("Copy chat")" Placement="@WORKSPACE_ITEM_TOOLTIP_PLACEMENT">
+                                            <MudIconButton Icon="@Icons.Material.Filled.ContentCopy" Size="Size.Medium" Color="Color.Inherit" Disabled="@this.IsChatTreeItemBusy(treeItem)" OnClick="@(() => this.CopyChatAsync(treeItem.Path))"/>
+                                        </MudTooltip>
+
                                         <MudTooltip Text="@T("Rename")" Placement="@WORKSPACE_ITEM_TOOLTIP_PLACEMENT">
                                             <MudIconButton Icon="@Icons.Material.Filled.Edit" Size="Size.Medium" Color="Color.Inherit" Disabled="@this.IsChatTreeItemBusy(treeItem)" OnClick="@(() => this.RenameChatAsync(treeItem.Path))"/>
                                         </MudTooltip>
@@ -148,4 +152,4 @@ else
             }
         </ItemTemplate>
     </MudTreeView>
-}
\ No newline at end of file
+}
diff --git a/app/MindWork AI Studio/Components/Workspaces.razor.cs b/app/MindWork AI Studio/Components/Workspaces.razor.cs
index 05e9c3d9..1b1f99b9 100644
--- a/app/MindWork AI Studio/Components/Workspaces.razor.cs	
+++ b/app/MindWork AI Studio/Components/Workspaces.razor.cs	
@@ -781,6 +781,37 @@ public partial class Workspaces : MSGComponentBase
         await this.LoadTreeItemsAsync(startPrefetch: false);
     }
 
+    private async Task CopyChatAsync(string? chatPath)
+    {
+        var chat = await this.LoadChatAsync(chatPath, false);
+        if (chat is null)
+            return;
+
+        var mediaOwner = MediaImportOwner.ForChat(chat.ChatId);
+        if (this.AIJobService.IsChatGenerationActive(chat.ChatId) || this.MediaTranscriptionService.IsBusy(mediaOwner))
+            return;
+
+        if (await MessageBus.INSTANCE.SendMessageUseFirstResult<bool, bool>(this, Event.HAS_CHAT_UNSAVED_CHANGES))
+        {
+            var dialogParameters = new DialogParameters<ConfirmDialog>
+            {
+                { x => x.Message, T("Are you sure you want to load another chat? All unsaved changes will be lost.") },
+            };
+
+            var dialogReference = await this.DialogService.ShowAsync<ConfirmDialog>(T("Copy Chat"), dialogParameters, DialogOptions.FULLSCREEN);
+            var dialogResult = await dialogReference.Result;
+            if (dialogResult is null || dialogResult.Canceled)
+                return;
+        }
+
+        var sourceChat = this.CurrentChatThread is { } currentChat && currentChat.ChatId == chat.ChatId ? currentChat : chat;
+        var copy = await WorkspaceBehaviour.CopyChatAsync(sourceChat);
+
+        await this.LoadTreeItemsAsync(startPrefetch: false);
+        this.CurrentChatThread = copy;
+        await this.CurrentChatThreadChanged.InvokeAsync(this.CurrentChatThread);
+    }
+
     private async Task RenameWorkspaceAsync(string? workspacePath)
     {
         if (workspacePath is null)
diff --git a/app/MindWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua b/app/MindWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua
index c0e2d70d..293b628b 100644
--- a/app/MindWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua	
+++ b/app/MindWork AI Studio/Plugins/languages/de-de-43065dbc-78d0-45b7-92be-f14c2926e2dc/plugin.lua	
@@ -3264,6 +3264,9 @@ UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T1347088452"] = "Ergebni
 -- Do you really want to remove this message?
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T1347427447"] = "Möchten Sie diese Nachricht wirklich löschen?"
 
+-- Do you really want to roll back this chat to this AI response? All later messages and their attachments will be permanently removed.
+UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T1347725178"] = "Möchtest du diesen Chat wirklich auf diese KI-Antwort zurücksetzen? Alle späteren Nachrichten und deren Anhänge werden dauerhaft gelöscht."
+
 -- Yes, remove the AI response and edit it
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T1350385882"] = "Ja, entferne die KI-Antwort und bearbeite sie."
 
@@ -3315,12 +3318,18 @@ UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T2822776450"] = "KI-Antw
 -- Number of attachments
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3018847255"] = "Anzahl der Anhänge"
 
+-- Roll back to this response
+UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3132525321"] = "Zu dieser Antwort zurücksetzen"
+
 -- Cannot render content of type {0} yet.
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3175548294"] = "Der Inhaltstyp {0} kann noch nicht angezeigt werden."
 
 -- Edit
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3267849393"] = "Bearbeiten"
 
+-- Roll Back Chat
+UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3304283125"] = "Chat zurücksetzen"
+
 -- Unknown
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3424652889"] = "Unbekannt"
 
@@ -3333,6 +3342,9 @@ UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3816336467"] = "Blockie
 -- Do you really want to regenerate this message?
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3878878761"] = "Möchten Sie diese Nachricht wirklich neu generieren?"
 
+-- Yes, roll back the chat
+UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3951371697"] = "Ja, Chat zurücksetzen"
+
 -- Remove Message
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T4070211974"] = "Nachricht entfernen"
 
@@ -5283,6 +5295,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T1016188706"] = "Möchten Sie
 -- Move chat
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T1133040906"] = "Chat verschieben"
 
+-- Copy Chat
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T1192756314"] = "Chat kopieren"
+
 -- Loading chats...
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T1364857726"] = "Chats werden geladen..."
 
@@ -5355,6 +5370,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T3249036008"] = "Es gibt bere
 -- Please enter a workspace name.
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T3288132732"] = "Bitte geben Sie einen Namen für diesen Arbeitsbereich ein."
 
+-- Copy chat
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T3337233722"] = "Chat kopieren"
+
 -- Rename
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T3355849203"] = "Umbenennen"
 
@@ -12893,3 +12911,9 @@ UI_TEXT_CONTENT["AISTUDIO::TOOLS::WORKSPACEBEHAVIOUR::T3043761007"] = "Möchten
 
 -- Unnamed chat
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::WORKSPACEBEHAVIOUR::T3310482275"] = "Unbenannter Chat"
+
+-- Copy of {0}
+UI_TEXT_CONTENT["AISTUDIO::TOOLS::WORKSPACEBEHAVIOUR::T3365678931"] = "Kopie von {0}"
+
+-- Empty chat
+UI_TEXT_CONTENT["AISTUDIO::TOOLS::WORKSPACEBEHAVIOUR::T4019509364"] = "Leerer Chat"
diff --git a/app/MindWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua b/app/MindWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua
index 4725c524..4b26268b 100644
--- a/app/MindWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua	
+++ b/app/MindWork AI Studio/Plugins/languages/en-us-97dfb1ba-50c4-4440-8dfa-6575daf543c8/plugin.lua	
@@ -3264,6 +3264,9 @@ UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T1347088452"] = "Result"
 -- Do you really want to remove this message?
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T1347427447"] = "Do you really want to remove this message?"
 
+-- Do you really want to roll back this chat to this AI response? All later messages and their attachments will be permanently removed.
+UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T1347725178"] = "Do you really want to roll back this chat to this AI response? All later messages and their attachments will be permanently removed."
+
 -- Yes, remove the AI response and edit it
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T1350385882"] = "Yes, remove the AI response and edit it"
 
@@ -3315,12 +3318,18 @@ UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T2822776450"] = "Export
 -- Number of attachments
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3018847255"] = "Number of attachments"
 
+-- Roll back to this response
+UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3132525321"] = "Roll back to this response"
+
 -- Cannot render content of type {0} yet.
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3175548294"] = "Cannot render content of type {0} yet."
 
 -- Edit
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3267849393"] = "Edit"
 
+-- Roll Back Chat
+UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3304283125"] = "Roll Back Chat"
+
 -- Unknown
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3424652889"] = "Unknown"
 
@@ -3333,6 +3342,9 @@ UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3816336467"] = "Blocked
 -- Do you really want to regenerate this message?
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3878878761"] = "Do you really want to regenerate this message?"
 
+-- Yes, roll back the chat
+UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T3951371697"] = "Yes, roll back the chat"
+
 -- Remove Message
 UI_TEXT_CONTENT["AISTUDIO::CHAT::CONTENTBLOCKCOMPONENT::T4070211974"] = "Remove Message"
 
@@ -5283,6 +5295,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T1016188706"] = "Are you sure
 -- Move chat
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T1133040906"] = "Move chat"
 
+-- Copy Chat
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T1192756314"] = "Copy Chat"
+
 -- Loading chats...
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T1364857726"] = "Loading chats..."
 
@@ -5355,6 +5370,9 @@ UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T3249036008"] = "There is alr
 -- Please enter a workspace name.
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T3288132732"] = "Please enter a workspace name."
 
+-- Copy chat
+UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T3337233722"] = "Copy chat"
+
 -- Rename
 UI_TEXT_CONTENT["AISTUDIO::COMPONENTS::WORKSPACES::T3355849203"] = "Rename"
 
@@ -12893,3 +12911,9 @@ UI_TEXT_CONTENT["AISTUDIO::TOOLS::WORKSPACEBEHAVIOUR::T3043761007"] = "Are you s
 
 -- Unnamed chat
 UI_TEXT_CONTENT["AISTUDIO::TOOLS::WORKSPACEBEHAVIOUR::T3310482275"] = "Unnamed chat"
+
+-- Copy of {0}
+UI_TEXT_CONTENT["AISTUDIO::TOOLS::WORKSPACEBEHAVIOUR::T3365678931"] = "Copy of {0}"
+
+-- Empty chat
+UI_TEXT_CONTENT["AISTUDIO::TOOLS::WORKSPACEBEHAVIOUR::T4019509364"] = "Empty chat"
diff --git a/app/MindWork AI Studio/Tools/WorkspaceBehaviour.cs b/app/MindWork AI Studio/Tools/WorkspaceBehaviour.cs
index 068f369c..8bb00ef2 100644
--- a/app/MindWork AI Studio/Tools/WorkspaceBehaviour.cs	
+++ b/app/MindWork AI Studio/Tools/WorkspaceBehaviour.cs	
@@ -782,6 +782,78 @@ public static class WorkspaceBehaviour
         }
     }
 
+    public static async Task<ChatThread> CopyChatAsync(ChatThread sourceChat)
+    {
+        var serializedChat = JsonSerializer.Serialize(sourceChat, JSON_OPTIONS);
+        var copiedChat = JsonSerializer.Deserialize<ChatThread>(serializedChat, JSON_OPTIONS)
+                         ?? throw new InvalidOperationException("The chat could not be copied.");
+        copiedChat = copiedChat with
+        {
+            ChatId = Guid.NewGuid(),
+            Name = string.Format(TB("Copy of {0}"), string.IsNullOrWhiteSpace(sourceChat.Name) ? TB("Empty chat") : sourceChat.Name),
+        };
+
+        var targetDirectory = GetChatDirectory(copiedChat.WorkspaceId, copiedChat.ChatId);
+        try
+        {
+            CopyManagedTranscriptAttachments(copiedChat, targetDirectory);
+            await StoreChatAsync(copiedChat);
+            return copiedChat;
+        }
+        catch
+        {
+            if (Directory.Exists(targetDirectory))
+                Directory.Delete(targetDirectory, true);
+
+            InvalidateWorkspaceTreeCache();
+            throw;
+        }
+    }
+
+    private static void CopyManagedTranscriptAttachments(ChatThread chat, string targetChatDirectory)
+    {
+        var targetTranscriptDirectory = Path.Combine(targetChatDirectory, "attachments", "transcripts");
+        var pathComparer = OperatingSystem.IsWindows() ? StringComparer.OrdinalIgnoreCase : StringComparer.Ordinal;
+        var copiedPaths = new Dictionary<string, ManagedTranscriptAttachment>(pathComparer);
+
+        foreach (var content in chat.Blocks.Select(block => block.Content).OfType<ContentText>())
+        {
+            for (var index = 0; index < content.FileAttachments.Count; index++)
+            {
+                if (content.FileAttachments[index] is ManagedTranscriptAttachment transcript)
+                    content.FileAttachments[index] = CopyManagedTranscriptAttachment(chat, transcript, targetTranscriptDirectory, copiedPaths);
+            }
+        }
+
+        for (var index = 0; index < chat.PendingMediaTranscripts.Count; index++)
+            chat.PendingMediaTranscripts[index] = CopyManagedTranscriptAttachment(chat, chat.PendingMediaTranscripts[index], targetTranscriptDirectory, copiedPaths);
+    }
+
+    private static ManagedTranscriptAttachment CopyManagedTranscriptAttachment(
+        ChatThread chat,
+        ManagedTranscriptAttachment source,
+        string targetTranscriptDirectory,
+        Dictionary<string, ManagedTranscriptAttachment> copiedPaths)
+    {
+        var sourcePath = Path.GetFullPath(source.FilePath);
+        if (copiedPaths.TryGetValue(sourcePath, out var existingCopy))
+            return existingCopy;
+
+        Directory.CreateDirectory(targetTranscriptDirectory);
+        var targetPath = NextTranscriptPath(chat, targetTranscriptDirectory, source.OriginalFileName);
+        if (File.Exists(sourcePath))
+            File.Copy(sourcePath, targetPath);
+
+        var copiedAttachment = new ManagedTranscriptAttachment(
+            Path.GetFileName(targetPath),
+            targetPath,
+            File.Exists(targetPath) ? new FileInfo(targetPath).Length : source.FileSizeBytes,
+            source.OriginalFileName,
+            false);
+        copiedPaths[sourcePath] = copiedAttachment;
+        return copiedAttachment;
+    }
+
     /// <summary>Creates a transcript atomically inside an already persisted chat.</summary>
     /// <param name="chat">Persisted chat that owns the transcript counter.</param>
     /// <param name="originalPath">Original media path.</param>
diff --git a/app/MindWork AI Studio/wwwroot/changelog/v26.9.1.md b/app/MindWork AI Studio/wwwroot/changelog/v26.9.1.md
index e0d15144..45f93210 100644
--- a/app/MindWork AI Studio/wwwroot/changelog/v26.9.1.md	
+++ b/app/MindWork AI Studio/wwwroot/changelog/v26.9.1.md	
@@ -1,4 +1,6 @@
 # v26.9.1, build 256 (2026-09-xx xx:xx UTC)
+- Added a way to copy an entire chat and continue the copy independently while the original conversation stays unchanged.
+- Added a way to roll a chat back to an earlier AI response. The response you choose stays, everything after it is permanently removed, and your current draft and attachments remain ready so you can continue from there.
 - Added tools that AI models can use on their own, starting with Web Search and Read Web Page. When you ask something a model cannot answer from what it knows, it now searches the web, reads the pages it found, and answers with the sources it used. You decide which tools a model may use, right below the message field, and you can watch it work: AI Studio shows which tool is running and, afterward, every call it made with its result. Whether tools are offered at all depends on the model because it has to support them. Read Web Page works right away; for Web Search you pick a search service in the app settings — Tavily or Staan with a free API key, or a SearXNG instance you run yourself. Set up more than one, and they can take turns when one of them finds nothing, or be asked all at once with their results combined. Many thanks to Peer Schütt (`peerschuett`) and Nils Kruthoff (`nilskruthoff`) for building this feature.
 - Added answers that appear word by word even while the AI uses its tools. You read along as the model writes, including the short note it puts down before it looks something up, and the answer that follows a tool call arrives the same way instead of all at once at the end.
 - Added safeguards around everything these tools bring back. Anything fetched from the web is treated as untrusted: AI Studio removes instructions hidden in a page before a model reads it and tells you when it did, exactly as it already does for the documents and web pages you load yourself. A model can never point a tool at your own network. Each tool states how much you have to trust a provider before it may be used with it, so your questions do not travel further than you allow. You can adjust that requirement per tool in the app settings.