Okay! Thanks for the response! Sounds like you are a little unsure why you might have mass removed these trails back then. And it's not clear to me from your changeset description either. As far as I can tell, the trails removed follow almost exactly with the Strava heatmap data of this area for the last 12 months. 

See a side by side here:
https://i.imgur.com/ENt8g9l.jpeg

It's clear these trails exist on the ground, and someone is using them pretty frequently. The majority of these trails seem like they have their access tags set no, and set to permissive tag set. So they might be private or informal trails, but that is not a valid reason to remove or exclude them from the OSM database. If they exist on the ground, they can be included and should not be removed.

I've done some work restoring the data, thanks for your help!

If you are interested more in why these trails should remain, please read: 
https://wiki.openstreetmap.org/wiki/Why_can%27t_I_delete_this_trail%3F




