Constable
Looks like you removed it by yourself. I'm not sure if removing it completely is the best thing to do. I mean, if the trail is still there and wasn't demolished, I think leaving it on the map, as Bootprint did, would be the best thing to do. Trail was yes still on the map but it was tagged as private and then showed up in a different color and was not routable by the routing services using Openstreetmap database.
That said, I'm not a local here, Bootprint will surely help up figuring out the best way of doing it.
Thanks for your notes!
Cheers