Hi,

Generally it's considered good practice to comment on the changesets you're reverting, since there's usually a reason that objects were changed.

That being said, I combined them because having multiple ways for a single object violates the "One feature, one OSM element" principle (https://wiki.openstreetmap.org/wiki/One_feature,_one_OSM_element)

Is there a reason why a way cannot be both a ski trail and a track? There doesn't appear to be any conflicting tags that would prevent it