Way(762977045); out geom; works way(1644959); out geom; does not work

I am trying to get export for Australian Alpine Walking Trail, way 1644959, & run the query
out geom;
however this shows on map as “This map intentionally left blank, empty dataset”
For the example at Export route to GPX file - #5 by SloGIS, using
out geom;
it works fine?

Querying https://www.openstreetmap.org/way/1644959 failed as this way does not exist

You should query for relation Relation: ‪Australian Alps Walking Track‬ (‪1644959‬) | OpenStreetMap - likely with geometry of ways forming it