There was a problem indeed with the upload. Somehow, there were no deletions associated with the numerous segmentations I did with some highways, resulting in the existence of both new segments and the older ones. Still, it was an easy fix and a matter of contacting the maker of the changeset and not triggering a revert and a bad review with no notice or dialog whatsoever.

The revert was reverted, and I am currently working on the duplicates. Sadly, a lot of work was lost, and I am having to redo it.