If anyone could double check this I'd be much obliged.
https://drive.google.com/open?id=0B9N-QE1V7uI4eUxNVUx6UzNTQW8
Didn't work for me.
html files won't open in the various software I use for looking at GPX files.
I tried manually renaming the file (changing the extension) & tried in a couple of different websites.
One failed to load, the other gave error msg: "XML error: Reserved XML Name at line 1"
Messing about editing an xml file seems like a bad idea on the face of it - far too much chance of a syntax error rendering the whole file unuseable.
There are various tools you can use to do this.
Mapsource is one (if you have it installed from the days when it was Garmin's current tool)
or among the online tools:
gpxeditor.co.uk (if you can get to grips with the slightly obscure UI)
doubtless there are others...