There is a (not perfect - but much quicker) alternative to doing it in Mapsource.
GPXeditor has a utility to turn a track into a route, labelling each routepoint in something approaching audaxese as it goes.
Here I've created a track between two of my local hostelries: from the Potter's Heron (bottom-right) to the Bear & Ragged Staff (top-left)
A downloaded track would work just as well.
Right-clicking on the track (or the cyan box top-right) gives an option to Create Route which produces this
Right-clicking on the routepoints gives you their name & comment fields (both of which are editable). The name field includes a sequential number, two are shown as examples below:
In this particular example the routepoints numbered 4, 5, and 6 are redundant and can be deleted.
Right-clicking on the route (or the magenta box top-right) provides an option to Renumber the points after deleting the redundant ones, adding any it hasn't noticed, etc
Lower down the list is an option to export as CSV
which (in Excel) looks like this - and can easily be compared with the routesheet instructions.