Hey guys, my 2006 denali has homo link. I just rented a 4 bedroom house with some buddies and it has a two car garage. i programmed one of the doors to my left button, the middle was previously programmed to my parents door at home, this weekend I went my parents house and the middle button no longer controls that door? Any ideas? Do I just need to reprogram the middle or right button for my parents door? Will that erase the left button?