VDR - VDP, different name, same anemic, unperforming lackluster software.
BUY a REAL backup. Veeam is what I would recommend.
You can spend ALL day fixing this, make it right maybe it works for a week, maybe 2. You cannot rely on VDP/VDR for anything. I REALLY hate the fact it has a built in limition on 100 VM's per instance. That to me is not only very limited, but makes me nervous that a product (especially backup) has limitations... that's not good.
You can try veeam for 30 days for free, I highly recommend it.. ANYTHING is better than VDP/VDR. manually copying is better.. yes it REALLY is that bad.
I have no faith in it whatsoever.