It sounds as if the machine you are updating the group policy on doesn't have the latest ADM templates, I believe you can download them. I'm by no means an expert on this..... are you doing it on the machine the policy was originally set on?
Surface Pro (2017) vs Surface Pro 4
20 groundbreaking 3D animation techniques
How to mine Bitcoin on Mac
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.