It seems - based on comments making many mentions of old treaties but not about the facto current control - that this edit should be reverted and actual line of control should be mapped.
Is anything indicating otherwise?
(Note: I am unfamiliar with local situation, this comment is attempted summary of discussion that happened so far)
To quote comment from changeset comments:
Boundaries in OSM should follow actual control, not what some government claims. Among other things, we would ask things like: If you want to travel to this area, do you need a Nepalese visa or an Indian visa? Do the people living in this area pay taxes to the Nepalese authorities or to the Indian authorities? If a crime happens in this region, will it be the Nepalese police investigating, or the Indian police? Questions like this will determine how to map the boundary in OSM
