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Deleting a Tasks breaks Project Recalculation

While testing I noticed a potential bug. I was able to successfully import an existing Project file using Aspose with no issues. However, I noticed that if you delete a task from the Project file, and save, all of the previous data gets removed (Actual Start, Actual Finish, and Duration) and the Project Recalculation no longer works.
How can I fix this issue? Is there a way to delete a task from the Project file and not have my previous data removed? I have attached screenshots of the Project files, and below is the logic used to retrieve and edit an existing Project file.

Thank you

static void Main(string[] args)

        License lic = new License();

        // The path to the documents directory.
        string dataDir = "C:/Users//Desktop/";

        // Read project xml into file stream
        using (Stream filesStream = new FileStream(dataDir + "ProjectBeforeSave.mpp", FileMode.Open))
            // Create project using file stream
            Project project = new Project(filesStream);

            ChildTasksCollector childTasks = new ChildTasksCollector();
            TaskUtils.Apply(project.RootTask, childTasks, 0);
            Console.WriteLine("Number of tasks: " + childTasks.Tasks.Count);

            foreach(var task in childTasks.Tasks)
                Console.WriteLine( "Task Name " + task.Get(Tsk.Name) + " Start " + task.Get(Tsk.Start) + " Finish " + task.Get(Tsk.Finish)  + " Actual Start " + task.Get(Tsk.ActualStart) + " Actual Finish " + task.Get(Tsk.ActualFinish));
                Console.WriteLine(" ");
                // Console.WriteLine("Finish " + task.Get(Tsk.Finish));

            //Delete Task from Project file
            var taskToDelete = childTasks.Tasks.Find(x => x.Get(Tsk.Uid) == 8);
            Console.WriteLine("Task to Delete" + taskToDelete.Get(Tsk.Name));


            //Modify an exiting tasks.
            var taskToModify = childTasks.Tasks.Find(x => x.Get(Tsk.Uid) == 7);
            taskToModify.Set(Tsk.ActualFinish, DateTime.Now);

            //Save the Project file
             project.Save(dataDir + " ProjectAfterSave.mpp", SaveFileFormat.MPP);

             //The existing Actual Start and Finish dates were removed. 


AfterSaveProjectScreenshot.PNG (10.8 KB)
BeforeSaveProjectFileScreenshot.PNG (11.5 KB) (56.0 KB)


I have worked with sample code shared and have observed the issue specified. A ticket with ID TASKSNET-4207 has been created to further investigate and resolve the issue. We will share the feedback with you as soon as the issue will be fixed.