Changing sample program in robot C?

Can sample programs in RobotC be modified and saved in the sample program directory. I only get the original file when I reopen and my modifications have been erased. RobotC says it is saving the file but it does not save the changes. The file I am using is Arcade Control with buttons. Do I need to save it with a new name in another directory. The file properties do not say read only. Thanks for your help.

use the “save as” feature and rename the program