Networker 19.1, Data Domain, and CloudBoost

I have a 5TB Windows file server VM that is being backed up as "full" backups on a weekly basis and "incremental" daily. These are VMware type backups and the backup target is a Dell Data Domain.

The savesets are being cloned to AWS via CloudBoost on a daily basis. The clone transfers 5TB every day even when an incremental is occurring -- Dell says this is because VMware savesets always clone as a full backup if they are sourced from a Data Domain. I suspect this is causing some problems with clones. 

What is the best practice for cloning a large file server drive from a Data Domain device to avoid these huge unnecessary transfers? Use a filesystem backup instead of VMware?

The person who normally handles these things left the company, so Networker is a bit new to me. Thanks