Track a train no longer tracking Cascades north of border?

[zephyr17]

About a week ago I noticed that Amtrak tracking (and asm.transitdocs.com which feeds off Amtrak) no longer tracks once the train is much past the Canadian border. Last tracking point is usually around where the train turns north between White Rock and the Nicomekl River. The times into Vancouver largely remain "estimated" or are updated to arrived long after actual arrival.

Until recently it used to actively track all the way into VAC. Anyone know why they stopped? Amtrak no longer paying to use a Canadian cellular network?

 

[TinCan782]

As of this reply (1920 hours PDT Sunday) Amtrak's Track-a-Train shows the southbound #519 compass west of White Rock. Transitdocs showing a similar position. Hard to tell the location on dixielandsoftware (appears about the border).

 

[zephyr17]

The check in west of White Rock appears to be the last one it will do now. Until a couple weeks ago it would update at points all the way into VAC. It isn't all that far from the border, so it looks to me like the checkpoints now stop once it is out of range of US based cell service.

Btw, you can zoom asm.transitdocs.com maps in.