[tooski]

The circled clip has pulled through the hole. The cable is installed from the underside/backside. The body of the clip towards the hole should be a bigger diameter than the hole. As you pull through, the 'fingers' compress going through the hole and spring back out once they are through the hole. The remaining part of the clip will/should prevent the rest of the clip from going through, locking the cable sheath in place. Then the ferrule end of the cable is installed in the bracket.
To remove the cable you have to remove the cable from the bracket and compress the fingers as you push through the hole. You can use a small diameter hose clamp to compress the fingers until the end of the fingers are through the hole then remove the clamp.