diff --git a/Rename/Models/AppSettings.cs b/Rename/Models/AppSettings.cs
index 1fc5784..bb90b9e 100644
--- a/Rename/Models/AppSettings.cs
+++ b/Rename/Models/AppSettings.cs
@@ -7,25 +7,28 @@ public class AppSettings
 {
 
     public string Company { init; get; }
-    public string CopyTo { init; get; }
     public string ComparePathsFile { init; get; }
+    public string CopyTo { init; get; }
     public int MaxDegreeOfParallelism { init; get; }
     public int MaxMinutesDelta { init; get; }
+    public bool RenameUndo { init; get; }
     public string WorkingDirectoryName { init; get; }
 
     [JsonConstructor]
     public AppSettings(string company,
-                       string copyTo,
                        string comparePathsFile,
+                       string copyTo,
                        int maxDegreeOfParallelism,
                        int maxMinutesDelta,
+                       bool renameUndo,
                        string workingDirectoryName)
     {
         Company = company;
-        CopyTo = copyTo;
         ComparePathsFile = comparePathsFile;
+        CopyTo = copyTo;
         MaxDegreeOfParallelism = maxDegreeOfParallelism;
         MaxMinutesDelta = maxMinutesDelta;
+        RenameUndo = renameUndo;
         WorkingDirectoryName = workingDirectoryName;
     }
 
diff --git a/Rename/Models/Binder/AppSettings.cs b/Rename/Models/Binder/AppSettings.cs
index 3a7d89c..a56acd2 100644
--- a/Rename/Models/Binder/AppSettings.cs
+++ b/Rename/Models/Binder/AppSettings.cs
@@ -9,10 +9,11 @@ public class AppSettings
 #nullable disable
 
     public string Company { get; set; }
-    public string CopyTo { get; set; }
     public string ComparePathsFile { get; set; }
+    public string CopyTo { get; set; }
     public int? MaxDegreeOfParallelism { get; set; }
     public int? MaxMinutesDelta { get; set; }
+    public bool? RenameUndo { get; set; }
     public string WorkingDirectoryName { get; set; }
 
 #nullable restore
@@ -30,12 +31,15 @@ public class AppSettings
             throw new NullReferenceException(nameof(appSettings.MaxDegreeOfParallelism));
         if (appSettings?.MaxMinutesDelta is null)
             throw new NullReferenceException(nameof(appSettings.MaxMinutesDelta));
+        if (appSettings?.RenameUndo is null)
+            throw new NullReferenceException(nameof(appSettings.RenameUndo));
         result = new(
             appSettings.Company,
-            appSettings.CopyTo,
             appSettings.ComparePathsFile,
+            appSettings.CopyTo,
             appSettings.MaxDegreeOfParallelism.Value,
             appSettings.MaxMinutesDelta.Value,
+            appSettings.RenameUndo.Value,
             appSettings.WorkingDirectoryName
         );
         return result;
diff --git a/Rename/Rename.cs b/Rename/Rename.cs
index 3571f45..b156948 100644
--- a/Rename/Rename.cs
+++ b/Rename/Rename.cs
@@ -92,6 +92,27 @@ public class Rename
         }
     }
 
+    private static List<(FileHolder, string)> GetRenameUndoToDoCollection(ProgressBar progressBar, string[] files)
+    {
+        List<(FileHolder, string)> results = new();
+        string[] lines;
+        string fileName;
+        FileHolder fileHolder;
+        foreach (string file in files)
+        {
+            progressBar.Tick();
+            fileName = Path.GetFileName(file);
+            if (!fileName.EndsWith(".id"))
+                continue;
+            lines = File.ReadAllLines(file);
+            if (lines.Length < 2)
+                continue;
+            fileHolder = new(lines[0]);
+            results.Add(new(fileHolder, lines[1]));
+        }
+        return results;
+    }
+
     private List<(FileHolder, string)> GetToDoCollection(ProgressBar progressBar, string[] files)
     {
         List<(FileHolder, string)> results = new();
@@ -346,12 +367,17 @@ public class Rename
         for (int i = 1; i < 3; i++)
         {
             message = $"{i}) Renaming files";
+            if (_AppSettings.RenameUndo && i == 1)
+                continue;
             files = i == 2 ? allFiles.ToArray() : (from l in allFiles where l.Contains("Rename") select l).ToArray();
             progressBar = new(files.Length, message, options);
             if (!files.Any())
                 continue;
             distinctCollection.Clear();
-            toDoCollection = GetToDoCollection(progressBar, files);
+            if (!_AppSettings.RenameUndo)
+                toDoCollection = GetToDoCollection(progressBar, files);
+            else
+                toDoCollection = GetRenameUndoToDoCollection(progressBar, files);
             foreach ((FileHolder fileHolder, string to) in toDoCollection)
             {
                 if (distinctCollection.Contains(to))