Whoa! How was sync stopped? It should not have been disabled like this if all you were doing was moving AADConnect to another server
Set-MsolDirSyncEnabled -EnableDirSync $false
If that was done, they yea, you could be waiting. Contact Dell and escalate.
If all you needed was to move to another AADConnect server, then all you needed to do was build out a new one with the same config, set to staging mode, then set the current one to staging mode and set the new one to export.