This reply is probably too late to help, but I will post this for the benefit of any new readers with similar issues.
This coping is a top mounted, single track metal coping for vinyl liner pools. If you can remove it, it can be replaced. We make a 6-inch wide coping just like this. It comes in 2 parts, a top section and a bottom section. The bottom section is aluminum and screws down to the top of the pool wall, and has a track to hold your existing liner. The top section is white plastic/pvc and snaps into place. The coping has 2 tracks, one for the liner and one for a winter cover. If you choose not to get a winter cover, you can put a filler strip in the top track or you can put the liner in the top track.
Here's a picture: