I need a fast answer.

Do you know why my MS project (2013) keeps deleting my tasks when outdent og indent a task?

And it is not possible for me to get it back :(

I've been wasting a lot of work today.

Regards

Hi,

As far as I known, if we indent and outdent tasks in Project 2013, an indented task becomes a subtask of the task above it, which becomes a summary task. It would be hidden, please click the arrow to show the sub task. Please note: When you move or delete a summary task, Project moves or deletes all of its subtasks.

If there are some macros in the file, it also may be a factor.

If this this occurred with the special file, do you mind sending a sample to us via Email (ibsofc@microsoft.com), I'd like to test it. If you have any update, please feel free let us know.

Regards,

George Zhao
TechNet Community Support