I am using Nexus v3. I had to restore my nexus repo from a backup, but now the npm module versions I had installed in the meantime (after the backup but before the restore) are not being added to the repo. I can install them from npm, but they don’t show up in the nexus ui. I tried clearing the npm cache and indexes via the ui, but that doesn’t appear to help.
Have you run a “repair - reconcile component database from blob store” scheduled task? That will be needed if the blob store and database were not backed up at the same time.