In the same way that it is impossible to delete a taxon with associated identifications or an associated taxonomic change, I am requesting that it be made impossible to delete a taxonomic change that has been committed.
Several times now, I have left a comment on a taxon change asking a question about it only to find later that someone has deleted it, presumably under the mistaken assumption that it will fix a mistake, or perhaps just in an attempt to hide it. This makes a change hard to reverse, since it can’t really be pointed out anymore, and difficult to keep track of, since there is no longer much record of it having happened. Additionally, I see no benefit to being able to do this sort of deletion since it only destroys information without conferring a benefit.
No longer allowing the deletion of committed taxonomic changes would maintain greater information about curatorial activity, and I believe would benefit the community.