If you've deleted a program but now want it back, the process is very simple!
Click on the Programs tab in the sidebar menu. Once on the programs page, click on the My Programs drop-down and select Archived Programs.
Here, you will see a list of all the programs you've deleted from your account. Find the program you want to bring back and click on the Unarchive link within that row.
This will bring the program back to your account and will keep any changes you made to it in the past.