If something was your profile picture on Facebook before how do you make it your profile picture again and keep the same amount of likes and comments?

First you would go to your albums and one of the albums should be Profile Pictures. Then, click on it.. and then click on the photo you want and scroll down. There should be an option on the right side of the screen that says make profile picture. But .. If you have two of the same pictures... the comments WON"T BE ON THERE..