If you need to copy any of the lists in your account, you can do so by clicking on the "List Options" button at the top of your To Do List and using the "copy" feature. When you duplicate your To Do List this will make an exact copy of your list, including any priority tags, status tags, notes, and anything else you may have added to your list. Follow the steps in the image below:

The new copy of your To Do List will appear in the same Folder Set as the list that you made the copy from.

Copying your To Do Lists will also copy any start or due dates that you've added to your Tasks. As you can see in the "Copy this list" screen pictured above there is an option to "Adjust dates forward." You can use this to choose the number of days to push forward the start and due dates of your tasks in your copied list.