My guess is that cp has little, if any, interest in Newport sub and would be happier without it. Since they own the d&h north, the route into northern New England is unfortunately duplicative and there is little industry or local traffic in northern VT.
CMQ didn't exactly drum up any new online business on this stretch either, it's the bridge traffic that helped them and VRS. CP hasn't done anything other than eliminate the middle man they no longer need to get the cars to points further west and south of Albany.
Avatar: NHV 669 at the south end of the "Pompy" in White River Jct., VT on 4/29/1993. Photo by Richard Roberg.
The line had 3 main functions, none of which are unfortunately currently relevant.
1 provide a passenger link on cp between Boston and Montreal
2. Connect cp mec bridge traffic over the mountain division
3. Connect cp B&M bridge traffic
No Amtrak svc bos-mtl + ownership of d&h to Albany makes this line redundant. Which is annoying. I hate wasted rail assets, like the UP TN pass or the old southern mainline from Asheville south over Saluda grade.
I’m near certain that any return of bos-mtl passenger svc in the future would move on the old CN/GT north of WRJ.
There used to be a 2d line from Canada in to Newport. It was the former Quebec Central that ran north to Sherbrooke and Quebec City. That’s all ripped up. The remaining CP line heads northeast to Farnham and Montreal.