The DNC server was originally hosted on a Macbook that may have been backed up to the cloud. This was moved to a dell server by Platte River Networks and Paul Combetta (Stonetear) and this may have been another image that escaped into the wild when the server was migrated. This could be the thumb drive that got mentioned several times by the FBI and others. The Macbook may ahve ended up being used by Weiner when he was doing his 'Carlos Danger' thang and he may have discovered it when Huma Abedin had it.
It's all time lines that eventually converge.